How to Remove ZLIB1.DLL | ZLIB1.DLL Malware

What is ZLIB1.DLL?

The file named ZLIB1.DLL is developed by Zlib. The file is secured and signed by NCH Software. The file is used by the software program Zlib which is used in compression and depression of library files. There are security updates being rolled out at regular intervals. The threat level of the file is 1.

ZLIB1.DLL is located in C:\ProgramData\nch software\boltpdf\driver64\zlib1.dll. The total size of the DLL file is 74.9 kilobytes. The latest version of the file found in the records is 1.2.1.1429. The program is a non-system process and if infected by a malware or virus, the file can be uninstalled without affecting the performance of the windows operating system.

Affected Platforms: Windows 7, 8, 10

How to determine if your computer is infected with ZLIB1.DLL malware?

Look out for these symptoms to check if your PC is infected with ZLIB1.DLL malware:

Unstable internet connection
ZLIB1.DLL occupies extra CPU space
PC processing speed slows down
Browser often redirects to irrelevant websites
Browser is bombarded with hordes of popup ads
Computer screen freezes repeatedly

Take the following steps to diagnose your PC for possible ZLIB1.DLL malware attack:

Step 1: Simultaneously press CTRL+ALT+DEL keys to open Task Manager.

Step 2: If you notice the file located outside C:\ProgramData\nch software\boltpdf\driver64\zlib1.dll, perform an antivirus scan to get rid of the malware.

How to remove ZLIB1.DLL malware from system using Comodo Antivirus?

Step 1: Download our award-winning Antivirus.

Step 2: Installation configuration frames will be displayed. Select the configuration you would like to apply.

Step 3: Select Customize Configuration option and arrange installers, configuration, and file location.

Step 4: Restart your PC after the installation gets over

Step 5: Wait for Comodo Internet Security to update the antivirus.

Step 6: Proceed with the quick scan that automatically begins after the update.

Step 7: If threats are found during the scanning, you will be notified through an alert screen.

Step 8: Comodo Antivirus will remove ZLIB1.DLL malware from your computer including all other malwares!

Malware Entries

No.	Company	File Type	SHA1	MD5	Malware Name	Digitally Signed	File Version	Product Version	Submitted From	Malware Behavior

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Safe Entries

First Seen: 22 July 2008 at 3:54 pm

No.	Company	File Type	SHA1	MD5	Digitally Signed	File Version	Product Version	Submitted From
1	Zlib	Executable	b784599c82bb90d5 267fd70aaa42acc0 c614b5d2	c7d4d685a0af2a09 cbc21cb474358595	No	1.2.3.2027	1.2.3.2027	Internal Submission
2	N/A	Executable	fcc1b7d830039c98 95860a30cce687e3 835c8e84	45e41d90d7493589 06f9110c5994ab0a	Yes	1.2.3	1.2.3	United States
3	Zlib	Executable	af435385e456b2b5 7212ffd7e6af6866 4aa04164	b6101d9726fd800a f0d960885bd7b065	No	1.2.2.1828	1.2.2.1828	Internal Submission
4	N/A	Executable	a637ca276c81ff3e 30d2f4e3ade98bcb 5c63aeb0	fa570b6d52471401 affd2478bb35234c	No	N/A	N/A	United States
5	N/A	Executable	44fbed0c0e82adc9 2ea2c84d20fb81c5 c79fcf4c	88398630222b76c0 e496b548688fe501	Yes	1.2.5	1.2.5	United States
6	N/A	Executable	9c35e7a8e946819c e27e981ada729cb3 62256a33	6bd741dd270f8cbc bf3916c3ed583075	No	N/A	N/A	United States
7	N/A	Executable	558d7c11c2a66995 2cd0a4b8b0ed8fb5 de20a65d	4bc05061664cd7f8 6331f1f6b56013a8	No	1.2.11	1.2.11	10.108.22.232/32
8	N/A	Executable	b1fb5bb5c067937f 80c123177b9332bf b8b487d0	7ca1195008f7064f ce575ba2e175d990	No	N/A	N/A	10.108.22.229/32
9	N/A	Executable	9d81f39ebb8bb46a d49dd8cabb938017 0ce4c76f	972e30960f3fb840 2d91513e352761cf	No	1.2.11	1.2.11	10.108.51.216/32
10	N/A	Executable	2acfa98d5f4bf8b2 adf03785f9eb377c 27016792	86286252abcf1550 850a0822a21f14d1	No	1.2.3	1.2.3	United States
11	N/A	Executable	6ad058f9949f91c8 97d2ddcfa6cddd11 de3da4d3	fa0d4a4cb10e2fed 92b9b2944d830306	No	1.2.11	1.2.11	10.108.22.229/32
12	N/A	Executable	774a77bd849adeec f9fa5777cebf6768 68dc40d3	a734a90325984c8c 0993247d2b50f545	Yes	1.2.5	1.2.5	United States
13	N/A	Executable	8c9097eb4c8a0e0c 380b0963d1333cde a38dd0d2	9e25e34abe87149c d0b951c515759594	Yes	1.2.3	1.2.3	United States
14	N/A	Executable	d0c8595ca90bcc06 43d3fcfb0024401b dfe672b0	c2648b81687a9376 b6414b9557373800	No	1.2.11	1.2.11	United States
15	Zlib	Executable	f1bebf8910542012 eaa4f0b001680b23 b0943719	440d203dd0d33ab5 63a9351367a86071	No	1.2.3.2027	1.2.3.2027	United States
16	N/A	Executable	a087a21be9b3d953 85487c4cb17f6daa a82ee5a1	2bed1f9c265c1f06 3246e4e55cc8ec87	Yes	1.2.3	1.2.3	10.224.27.193/32
17	N/A	Executable	93456aa7e98e6d38 fa669c241f3d5be6 912f0fca	ba235af458435f95 bd21f861b82de874	No	1.2.11	1.2.11	10.108.51.119/32
18	N/A	Executable	b1fb5bb5c067937f 80c123177b9332bf b8b487d0	7ca1195008f7064f ce575ba2e175d990	No	N/A	N/A	United States
19	N/A	Executable	9c2d047ce1c3afcc c3c9e0f51813777c 8298af2c	12a1924393844d14 42e2bc45312cdce7	No	N/A	N/A	10.108.22.232/32
20	Zlib	Executable	3045634965ca1b0d 5f31a863ab1c3440 5f20ec03	f5b8b7054675d6aa f4ce3e727395f402	No	1.2.1.1429	1.2.1.1429	Internal Submission
21	N/A	Executable	a8e8946cf451d350 e7928f249368ec88 13b906dc	f6e07fb16786685f 1bf201b2565ac4ba	No	1.2.3	1.2.3	United States
22	N/A	Executable	95af663e40106b5c 7b116c250816af15 df3c5409	ba845eb55909e3d3 899055e81bab58eb	No	1.2.2	1.2.2	10.108.22.232/32
23	N/A	Executable	bc464692057b65e3 bdbd6e1f97711c8a c77004f6	00454a3c20b2c29e 2d4aa7a88cbda04f	No	1.2.3	1.2.3	Internal Submission
24	N/A	Executable	67a0bf698c3a58f4 b1a6e1f4c11165d4 94017bef	99e402544e67c8b5 7be64cac89760f3f	No	1.2.3	1.2.3	Internal Submission
25	N/A	Executable	39b42ba932e4e011 6a37ad919447e496 b2161e63	bcfbe8e395433cf4 43e3b40cf8aedd1a	No	1.2.11	1.2.11	United States
26	N/A	Executable	72c2d033e7b6839d 11805384231bf0b7 d0575398	edde9fcf14ed4a9d c8163dd74e541694	No	1.2.3	1.2.3	Internal Submission
27	N/A	Executable	b27e01f2c8aa57c0 6515236b28db8e09 4620ab84	f8afe5b39bd512d2 6870a7a7d21b36ae	No	1.2.5	1.2.5	10.224.25.43/32
28	N/A	Executable	13b196510f738621 ab34b3a118f6be7d a2f32e3a	cf10834f18ff18a2 ae3fc526bcb3d950	No	1.2.5	1.2.5	Internal Submission
29	N/A	Executable	2017c6350ccdf5f5 0974b739eaabb81f d17a2de1	3fad42e42f836fb9 01b3fb97d3d51cad	No	1.2.3	1.2.3	10.108.22.232/32
30	N/A	Executable	c92057013c0b154e 8e735adfc9bd943e f821fedd	8341d9ffd1306734 a9d5107b31b2cdff	No	1.2.8	1.2.8	United States
31	N/A	Executable	6d957ba632df5b06 d49a901f2772df43 01610a2a	80e41408f6d641dc 1c0f5353a0cc8125	No	1.2.3	1.2.3	United States
32	N/A	Executable	cbbce727fd844748 7c7fc68051b24df1 7d043649	d90dad5eea33a178 bac56fff2847d4c2	No	1.2.5	1.2.5	Internal Submission
33	GnuWin32	Executable	de64c113d354784b 3f1670bc44b2f4cf a9673260	26523ebace164f8c fda81e4932b690de	No	1.2.3.2532	1.2.3.2532	10.108.22.232/32
34	N/A	Executable	f434a84f96c0eff5 c94fd7cdc04e8462 0d53dcd9	73419373d09ef6c4 6f3e87d9e4200b0b	No	1.2.11	1.2.11	10.108.51.235/32
35	N/A	Executable	2c4050032e75f311 cd9179557be85861 d37c80bb	d2b092d584fd202e f759d4efdf8a40ab	Yes	1.2.5	1.2.5	United States
36	N/A	Executable	1523ae71ca322671 022b297e19c8acab e9f2105d	3ecfe1baeab59176 9664567c4e653e6f	No	1.2.1	1.2.1	Internal Submission
37	N/A	Executable	4a0b742bbdae508e 2ae5dd818841b8d7 7a490641	472630f89e58e926 f0d3c9245ec27860	No	1.2.3	1.2.3	Internal Submission
38	Zlib	Executable	826df64ee273ba65 d4a08c84e40e1d67 d18d057c	c476395e39890812 d8ab2c8495700eb8	No	1.2.3.2027	1.2.3.2027	Internal Submission
39	N/A	Executable	f5f466cd1b2cd659 c6ce40ec9806ddc1 e17f93cd	df91619f5ecdb0bd 3b478d8323e296df	Yes	1.2.5	1.2.5	United States
40	N/A	Executable	5c3aaaeb3ab3d699 f13bea6782ce3b18 7ad4915b	bc9916e1bdf28131 88988fd1ffe9440f	Yes	1.2.5	1.2.5	United States
41	N/A	Executable	a68e4280161823a2 29184a5b502202c8 266e5c7c	241032934f37492f 60c178d6f4900968	No	N/A	N/A	United States
42	N/A	Executable	3866c7802f774f8e fec3c0b280ee948b eeb30ea9	53cb2474f6cc075f 1ed9f1a8c3108516	Yes	1.2.5	1.2.5	United States
43	N/A	Executable	cbbce727fd844748 7c7fc68051b24df1 7d043649	d90dad5eea33a178 bac56fff2847d4c2	No	1.2.5	1.2.5	United States
44	N/A	Executable	6d957ba632df5b06 d49a901f2772df43 01610a2a	80e41408f6d641dc 1c0f5353a0cc8125	No	1.2.3	1.2.3	Internal Submission
45	N/A	Executable	85cf8bea378c2350 ff6dd191b60913be 155594fc	061574f130df7999 3e4726ae459f43e4	No	1.2.6	1.2.6	United States
46	N/A	Executable	575c7ac6104d3e00 0b091f8af343e822 dbc53931	977d5fd0f1ce3349 2336d6d48e4bef6d	No	1.2.3	1.2.3	United States
47	N/A	Executable	797c8364c42b3f51 85d52528f5db7076 fff5e107	29c98f15245e26ae 6e769337eeaeb1cd	No	1.2.1	1.2.1	Internal Submission
48	Zlib	Executable	2b07f557aa36a36d 903b112eb6572e3f a1f21a8c	746232ca782fb682 e1438e145a3956a6	No	1.2.3.2027	1.2.3.2027	Internal Submission
49	N/A	Executable	6a5c6cb289c736d2 ee857b341ad89529 efddf250	539a8a87f56c7aa9 3bf9ab5f9a650786	Yes	1.2.3	1.2.3	Internal Submission
50	N/A	Executable	9401b7081e68a52e d30d9eae5833afff 179f272f	1fa17024c789dad5 95bdaa7f0a82db02	No	N/A	N/A	United States
51	N/A	Executable	76d5a6308738c767 d33f16ca3bbb97ba fbf366ae	84d454aba6100f85 58314d24f2e5f791	No	1.2.3	1.2.3	Internal Submission
52	N/A	Executable	3cbcee30fc0a7e98 07931bc0dafceb62 7042bfc9	b8a9e91134e7c894 40a0f95470d5e47b	No	1.2.8	1.2.8	United States
53	GnuWin32	Executable	de64c113d354784b 3f1670bc44b2f4cf a9673260	26523ebace164f8c fda81e4932b690de	No	1.2.3.2532	1.2.3.2532	Internal Submission
54	N/A	Executable	8d762f1791d3a0eb 591b603ff2959521 dc9f4789	8ab3de8d726e99cb 09351c97454890e0	Yes	1.2.5	1.2.5	United States
55	N/A	Executable	6d957ba632df5b06 d49a901f2772df43 01610a2a	80e41408f6d641dc 1c0f5353a0cc8125	No	1.2.3	1.2.3	10.224.25.43/32
56	N/A	Executable	428f574527b6f3ff 63e946af4a5a31e3 23927be4	5ff032098b584fe9 d9c7702e559845db	Yes	1.2.5	1.2.5	United States
57	N/A	Executable	6db45b3cd7708fa4 fa1b0667ee1ea0bc d9f0c60e	f40e42822417d10f a4cb11e01fef7130	Yes	1.2.5	1.2.5	United States
58	N/A	Executable	42418f880808afae d28e3111d71bcb79 428cec9c	cec7d9b4c67de3ee 0015c337100c9479	No	1.2.6	1.2.6	United States
59	N/A	Executable	58c51207c4b65fb7 abfe77391236d548 ee73a6fb	25278758dc2b1309 f69d2f00183d9dcd	No	1.2.11	1.2.11	10.108.22.232/32
60	N/A	Executable	92cf890392febc1c 53a7417870cbc9ac 373c7405	8715690438860eae cc98cdd95aa80ab8	No	N/A	N/A	United States
61	N/A	Executable	2acfa98d5f4bf8b2 adf03785f9eb377c 27016792	86286252abcf1550 850a0822a21f14d1	No	1.2.3	1.2.3	Internal Submission
62	N/A	Executable	95af663e40106b5c 7b116c250816af15 df3c5409	ba845eb55909e3d3 899055e81bab58eb	No	1.2.2	1.2.2	Internal Submission
63	N/A	Executable	8adef9b4cc7c16ac 66fd83bfb9193e07 b1859c81	9db03326a3adf8ea d5b9204a82963054	No	1.2.11	1.2.11	10.108.51.235/32
64	N/A	Executable	443596368453ec76 1a97d56aa96e284e 7d6dd43d	d28be099e9170cf5 5a6cf1673ee5d2d1	Yes	1.2.5	1.2.5	United States
65	N/A	Executable	d4a82beef612d5e3 c4a16eded64928bd 937e322b	0507c65e33c90519 451af4f06ec8f3cd	No	N/A	N/A	10.108.22.229/32
66	Zlib	Executable	b784599c82bb90d5 267fd70aaa42acc0 c614b5d2	c7d4d685a0af2a09 cbc21cb474358595	No	1.2.3.2027	1.2.3.2027	United States
67	N/A	Executable	57e7a4ff13f572fa 5337dbf8b5498073 9f7070c9	4b80732db1c20ae1 b6c79154aa933c4d	No	1.2.11	1.2.11	United States
68	N/A	Executable	90a06dfea78d6ace 8dbd3789c966965c 11c3e7bd	cca1afc5c52dc31a 827d52dc759debda	Yes	1.2.5	1.2.5	United States
69	N/A	Executable	a8e8946cf451d350 e7928f249368ec88 13b906dc	f6e07fb16786685f 1bf201b2565ac4ba	No	1.2.3	1.2.3	Internal Submission
70	N/A	Executable	62a33610b2e1a3fd 5c06d3b1edf3050c 6fc7f0e6	f3c15fcca197caea eeef7163af68b071	No	1.2.3	1.2.3	Internal Submission

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How to Remove “ZLIB1.DLL”

What is ZLIB1.DLL?

How to determine if your computer is infected with ZLIB1.DLL malware?