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	9d81f39ebb8bb46a d49dd8cabb938017 0ce4c76f	972e30960f3fb840 2d91513e352761cf	No	1.2.11	1.2.11	10.108.51.216/32
5	N/A	Executable	2acfa98d5f4bf8b2 adf03785f9eb377c 27016792	86286252abcf1550 850a0822a21f14d1	No	1.2.3	1.2.3	United States
6	N/A	Executable	95af663e40106b5c 7b116c250816af15 df3c5409	ba845eb55909e3d3 899055e81bab58eb	No	1.2.2	1.2.2	United States
7	N/A	Executable	8c9097eb4c8a0e0c 380b0963d1333cde a38dd0d2	9e25e34abe87149c d0b951c515759594	Yes	1.2.3	1.2.3	United States
8	N/A	Executable	0da7ecf98749af47 2d28262d3c93beed d50419b6	77b7407cc537cad8 d127906ae87a598c	No	N/A	N/A	United States
9	Zlib	Executable	f1bebf8910542012 eaa4f0b001680b23 b0943719	440d203dd0d33ab5 63a9351367a86071	No	1.2.3.2027	1.2.3.2027	United States
10	N/A	Executable	a087a21be9b3d953 85487c4cb17f6daa a82ee5a1	2bed1f9c265c1f06 3246e4e55cc8ec87	Yes	1.2.3	1.2.3	10.224.27.193/32
11	N/A	Executable	572b702cb347d9ca 510a9cf7c6c15ee2 7b9fa811	8c1b41d7a1e90c0e aa3e88c6ae21ff4c	No	1.2.7	1.2.7	United States
12	N/A	Executable	93456aa7e98e6d38 fa669c241f3d5be6 912f0fca	ba235af458435f95 bd21f861b82de874	No	1.2.11	1.2.11	10.108.51.119/32
13	Zlib	Executable	3045634965ca1b0d 5f31a863ab1c3440 5f20ec03	f5b8b7054675d6aa f4ce3e727395f402	No	1.2.1.1429	1.2.1.1429	Internal Submission
14	N/A	Executable	a8e8946cf451d350 e7928f249368ec88 13b906dc	f6e07fb16786685f 1bf201b2565ac4ba	No	1.2.3	1.2.3	United States
15	N/A	Executable	bc464692057b65e3 bdbd6e1f97711c8a c77004f6	00454a3c20b2c29e 2d4aa7a88cbda04f	No	1.2.3	1.2.3	Internal Submission
16	N/A	Executable	67a0bf698c3a58f4 b1a6e1f4c11165d4 94017bef	99e402544e67c8b5 7be64cac89760f3f	No	1.2.3	1.2.3	Internal Submission
17	N/A	Executable	72c2d033e7b6839d 11805384231bf0b7 d0575398	edde9fcf14ed4a9d c8163dd74e541694	No	1.2.3	1.2.3	Internal Submission
18	N/A	Executable	13b196510f738621 ab34b3a118f6be7d a2f32e3a	cf10834f18ff18a2 ae3fc526bcb3d950	No	1.2.5	1.2.5	Internal Submission
19	N/A	Executable	a1d49b5fc7e71119 0710506095478ed8 8c1e63d7	70143f97b8f3b887 bb76fd6cab0f18dc	Yes	1.2.8	1.2.8	United States
20	N/A	Executable	c92057013c0b154e 8e735adfc9bd943e f821fedd	8341d9ffd1306734 a9d5107b31b2cdff	No	1.2.8	1.2.8	United States
21	N/A	Executable	6d957ba632df5b06 d49a901f2772df43 01610a2a	80e41408f6d641dc 1c0f5353a0cc8125	No	1.2.3	1.2.3	United States
22	N/A	Executable	cbbce727fd844748 7c7fc68051b24df1 7d043649	d90dad5eea33a178 bac56fff2847d4c2	No	1.2.5	1.2.5	Internal Submission
23	N/A	Executable	1224dec8033471b5 db0462bf3bdf6a19 d340128a	8f8825e1d66df6dd fe26bbd3237e5b0c	Yes	1.2.11	1.2.11	United States
24	N/A	Executable	f434a84f96c0eff5 c94fd7cdc04e8462 0d53dcd9	73419373d09ef6c4 6f3e87d9e4200b0b	No	1.2.11	1.2.11	10.108.51.235/32
25	N/A	Executable	1523ae71ca322671 022b297e19c8acab e9f2105d	3ecfe1baeab59176 9664567c4e653e6f	No	1.2.1	1.2.1	Internal Submission
26	N/A	Executable	4a0b742bbdae508e 2ae5dd818841b8d7 7a490641	472630f89e58e926 f0d3c9245ec27860	No	1.2.3	1.2.3	Internal Submission
27	N/A	Executable	ac5ee8314956d21b 5ff0a2f966a0180f ba2e06fc	fd8b4821b62cf212 ab5c054d11e511f7	No	1.2.7	1.2.7	United States
28	Zlib	Executable	826df64ee273ba65 d4a08c84e40e1d67 d18d057c	c476395e39890812 d8ab2c8495700eb8	No	1.2.3.2027	1.2.3.2027	Internal Submission
29	N/A	Executable	959253b12640ca55 058efd636ccdc940 09b95344	1a4ce8c5d91c65c8 a557f55960340911	No	1.2.5	1.2.5	United States
30	N/A	Executable	a68e4280161823a2 29184a5b502202c8 266e5c7c	241032934f37492f 60c178d6f4900968	No	N/A	N/A	United States
31	N/A	Executable	cbbce727fd844748 7c7fc68051b24df1 7d043649	d90dad5eea33a178 bac56fff2847d4c2	No	1.2.5	1.2.5	United States
32	N/A	Executable	6d957ba632df5b06 d49a901f2772df43 01610a2a	80e41408f6d641dc 1c0f5353a0cc8125	No	1.2.3	1.2.3	Internal Submission
33	N/A	Executable	8bd49dc4cf501648 0486b7d8d93a31e0 7a257bd4	a353c128309c37da 1aee0b0d8895c087	No	1.2.3	1.2.3	United States
34	N/A	Executable	797c8364c42b3f51 85d52528f5db7076 fff5e107	29c98f15245e26ae 6e769337eeaeb1cd	No	1.2.1	1.2.1	Internal Submission
35	Zlib	Executable	2b07f557aa36a36d 903b112eb6572e3f a1f21a8c	746232ca782fb682 e1438e145a3956a6	No	1.2.3.2027	1.2.3.2027	Internal Submission
36	N/A	Executable	2017c6350ccdf5f5 0974b739eaabb81f d17a2de1	3fad42e42f836fb9 01b3fb97d3d51cad	No	1.2.3	1.2.3	10.224.25.43/32
37	N/A	Executable	6a5c6cb289c736d2 ee857b341ad89529 efddf250	539a8a87f56c7aa9 3bf9ab5f9a650786	Yes	1.2.3	1.2.3	Internal Submission
38	N/A	Executable	76d5a6308738c767 d33f16ca3bbb97ba fbf366ae	84d454aba6100f85 58314d24f2e5f791	No	1.2.3	1.2.3	Internal Submission
39	N/A	Executable	3cbcee30fc0a7e98 07931bc0dafceb62 7042bfc9	b8a9e91134e7c894 40a0f95470d5e47b	No	1.2.8	1.2.8	United States
40	GnuWin32	Executable	de64c113d354784b 3f1670bc44b2f4cf a9673260	26523ebace164f8c fda81e4932b690de	No	1.2.3.2532	1.2.3.2532	Internal Submission
41	N/A	Executable	341b2ae59d911770 c44a94bfb8cb7162 7eb97c6a	dd351bf0834c7732 e087e1879a492d51	No	1.2.8	1.2.8	United States
42	N/A	Executable	9a6fb9a1bcec0487 df0fb1e0fea7cf1c e2ca6823	eaf53b46fdbf9dd4 f653353c5d770cdd	Yes	1.2.5	1.2.5	United States
43	N/A	Executable	83d72e5f7a5c2ee8 d64bbfb6a583a42a 63ac3f0c	f1b5abd75f397d86 d271857f5a7315ba	No	N/A	N/A	United States
44	N/A	Executable	92cf890392febc1c 53a7417870cbc9ac 373c7405	8715690438860eae cc98cdd95aa80ab8	No	N/A	N/A	United States
45	N/A	Executable	2acfa98d5f4bf8b2 adf03785f9eb377c 27016792	86286252abcf1550 850a0822a21f14d1	No	1.2.3	1.2.3	Internal Submission
46	N/A	Executable	95af663e40106b5c 7b116c250816af15 df3c5409	ba845eb55909e3d3 899055e81bab58eb	No	1.2.2	1.2.2	Internal Submission
47	N/A	Executable	8adef9b4cc7c16ac 66fd83bfb9193e07 b1859c81	9db03326a3adf8ea d5b9204a82963054	No	1.2.11	1.2.11	10.108.51.235/32
48	N/A	Executable	1f9f7cc9c1e0b798 f91cb14a849649c7 ec99e2fc	a2b3069a61e8cadf 87b1811c4dfb8ec1	No	1.2.5	1.2.5	Internal Submission
49	N/A	Executable	f299a45a0715449b 249583f7ef098892 d4f51e65	ef48e4156e01fc4c e97c420240b580d5	Yes	1.2.8	1.2.8	United States
50	N/A	Executable	a8e8946cf451d350 e7928f249368ec88 13b906dc	f6e07fb16786685f 1bf201b2565ac4ba	No	1.2.3	1.2.3	Internal Submission
51	N/A	Executable	493a733c1b26c67c cf85cb104babed78 b6c08eaa	ba7d7c9615808e36 3475ff1421e63a99	No	1.2.3	1.2.3	Internal Submission
52	N/A	Executable	b52e893736f9dca3 0d4f6d7d93ec0975 1fbaf6cc	a3ed35fda2e809a8 c908ae7a8709187c	Yes	1.2.3	1.2.3	Internal Submission
53	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?