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	N/A	Executable	15cd01170ff8d853 1fb16f4f7a1c5fbe 810a1057	72e87ad407bb28f5 b471c3396296b377	No	1.2.5	1.2.5	United States
4	Zlib	Executable	af435385e456b2b5 7212ffd7e6af6866 4aa04164	b6101d9726fd800a f0d960885bd7b065	No	1.2.2.1828	1.2.2.1828	Internal Submission
5	N/A	Executable	a637ca276c81ff3e 30d2f4e3ade98bcb 5c63aeb0	fa570b6d52471401 affd2478bb35234c	No	N/A	N/A	United States
6	N/A	Executable	7e4c090b4ec3b67b 512598fed63a02e4 896b95af	49df7dc6870068bd 6cf68bfa4f0f088b	Yes	1.2.5	1.2.5	United States
7	N/A	Executable	9d81f39ebb8bb46a d49dd8cabb938017 0ce4c76f	972e30960f3fb840 2d91513e352761cf	No	1.2.11	1.2.11	10.108.51.216/32
8	N/A	Executable	65e4728fc13d0f18 53ca365ea754e6fa 27879035	f7f78735298ac962 9137f70bed334bcc	No	1.2.7	1.2.7	United States
9	N/A	Executable	95af663e40106b5c 7b116c250816af15 df3c5409	ba845eb55909e3d3 899055e81bab58eb	No	1.2.2	1.2.2	10.224.25.96/32
10	N/A	Executable	a1f0f4254c648aa8 44c62176e97c2df9 b6ff6d18	831f38c4a8f2263c 0f8820350337981f	No	1.2.8	1.2.8	United States
11	N/A	Executable	8c9097eb4c8a0e0c 380b0963d1333cde a38dd0d2	9e25e34abe87149c d0b951c515759594	Yes	1.2.3	1.2.3	United States
12	Zlib	Executable	f1bebf8910542012 eaa4f0b001680b23 b0943719	440d203dd0d33ab5 63a9351367a86071	No	1.2.3.2027	1.2.3.2027	United States
13	N/A	Executable	a087a21be9b3d953 85487c4cb17f6daa a82ee5a1	2bed1f9c265c1f06 3246e4e55cc8ec87	Yes	1.2.3	1.2.3	10.224.27.193/32
14	N/A	Executable	93456aa7e98e6d38 fa669c241f3d5be6 912f0fca	ba235af458435f95 bd21f861b82de874	No	1.2.11	1.2.11	10.108.51.119/32
15	Zlib	Executable	3045634965ca1b0d 5f31a863ab1c3440 5f20ec03	f5b8b7054675d6aa f4ce3e727395f402	No	1.2.1.1429	1.2.1.1429	Internal Submission
16	N/A	Executable	a8e8946cf451d350 e7928f249368ec88 13b906dc	f6e07fb16786685f 1bf201b2565ac4ba	No	1.2.3	1.2.3	United States
17	N/A	Executable	bc464692057b65e3 bdbd6e1f97711c8a c77004f6	00454a3c20b2c29e 2d4aa7a88cbda04f	No	1.2.3	1.2.3	Internal Submission
18	N/A	Executable	67a0bf698c3a58f4 b1a6e1f4c11165d4 94017bef	99e402544e67c8b5 7be64cac89760f3f	No	1.2.3	1.2.3	Internal Submission
19	N/A	Executable	72c2d033e7b6839d 11805384231bf0b7 d0575398	edde9fcf14ed4a9d c8163dd74e541694	No	1.2.3	1.2.3	Internal Submission
20	N/A	Executable	13b196510f738621 ab34b3a118f6be7d a2f32e3a	cf10834f18ff18a2 ae3fc526bcb3d950	No	1.2.5	1.2.5	Internal Submission
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	f7fe2fd797518e40 c5116cf884cc360e 0080010b	b67f58aa032cc38c 1dee2f0e98df11ee	No	1.2.6	1.2.6	United States
24	N/A	Executable	1224dec8033471b5 db0462bf3bdf6a19 d340128a	8f8825e1d66df6dd fe26bbd3237e5b0c	Yes	1.2.11	1.2.11	United States
25	N/A	Executable	f434a84f96c0eff5 c94fd7cdc04e8462 0d53dcd9	73419373d09ef6c4 6f3e87d9e4200b0b	No	1.2.11	1.2.11	10.108.51.235/32
26	NULL	Executable	6114a3137fd217ae 08e6a468479d09c5 3524a620	1037a52331ec7e78 3fd5acc14881c101	No	1.2.11	1.2.11	United States
27	N/A	Executable	a637ca276c81ff3e 30d2f4e3ade98bcb 5c63aeb0	fa570b6d52471401 affd2478bb35234c	No	N/A	N/A	10.224.25.45/32
28	N/A	Executable	fb746f5f8f4c74b9 19b809dcf552a65e 7b8e50a1	f43d94bcf96337cb 2ea712686f528a25	No	1.2.11	1.2.11	United States
29	N/A	Executable	1523ae71ca322671 022b297e19c8acab e9f2105d	3ecfe1baeab59176 9664567c4e653e6f	No	1.2.1	1.2.1	Internal Submission
30	N/A	Executable	4a0b742bbdae508e 2ae5dd818841b8d7 7a490641	472630f89e58e926 f0d3c9245ec27860	No	1.2.3	1.2.3	Internal Submission
31	Zlib	Executable	826df64ee273ba65 d4a08c84e40e1d67 d18d057c	c476395e39890812 d8ab2c8495700eb8	No	1.2.3.2027	1.2.3.2027	Internal Submission
32	N/A	Executable	cbbce727fd844748 7c7fc68051b24df1 7d043649	d90dad5eea33a178 bac56fff2847d4c2	No	1.2.5	1.2.5	United States
33	N/A	Executable	6d957ba632df5b06 d49a901f2772df43 01610a2a	80e41408f6d641dc 1c0f5353a0cc8125	No	1.2.3	1.2.3	Internal Submission
34	N/A	Executable	ad6d80c97ff59dfb fa1e05b1860771b7 607f54d4	3e32725d75077a5a 799b58e0d163a962	No	N/A	N/A	United States
35	N/A	Executable	797c8364c42b3f51 85d52528f5db7076 fff5e107	29c98f15245e26ae 6e769337eeaeb1cd	No	1.2.1	1.2.1	Internal Submission
36	Zlib	Executable	2b07f557aa36a36d 903b112eb6572e3f a1f21a8c	746232ca782fb682 e1438e145a3956a6	No	1.2.3.2027	1.2.3.2027	Internal Submission
37	N/A	Executable	44ae3848dee16037 a2b8b1db44905680 1ce43bfe	78d46932e530b94f 80c9552bd4d15995	No	N/A	N/A	United States
38	N/A	Executable	6a5c6cb289c736d2 ee857b341ad89529 efddf250	539a8a87f56c7aa9 3bf9ab5f9a650786	Yes	1.2.3	1.2.3	Internal Submission
39	N/A	Executable	063662cec3743cb6 1b8f3204f4463ab9 ff03adbf	cd43ab34ad6359f5 0a12ceb881517096	Yes	1.2.11	1.2.11	10.224.25.45/32
40	N/A	Executable	9401b7081e68a52e d30d9eae5833afff 179f272f	1fa17024c789dad5 95bdaa7f0a82db02	No	N/A	N/A	United States
41	N/A	Executable	76d5a6308738c767 d33f16ca3bbb97ba fbf366ae	84d454aba6100f85 58314d24f2e5f791	No	1.2.3	1.2.3	Internal Submission
42	N/A	Executable	3cbcee30fc0a7e98 07931bc0dafceb62 7042bfc9	b8a9e91134e7c894 40a0f95470d5e47b	No	1.2.8	1.2.8	United States
43	GnuWin32	Executable	de64c113d354784b 3f1670bc44b2f4cf a9673260	26523ebace164f8c fda81e4932b690de	No	1.2.3.2532	1.2.3.2532	Internal Submission
44	N/A	Executable	92cf890392febc1c 53a7417870cbc9ac 373c7405	8715690438860eae cc98cdd95aa80ab8	No	N/A	N/A	United States
45	N/A	Executable	34aa26204710bb92 7c716fb23ed3b376 93337a60	76b3b950f5ff8063 aeb99c8458ff7789	Yes	1.2.8	1.2.8	United States
46	N/A	Executable	2acfa98d5f4bf8b2 adf03785f9eb377c 27016792	86286252abcf1550 850a0822a21f14d1	No	1.2.3	1.2.3	Internal Submission
47	N/A	Executable	633692533084f771 8c02f10e5ff5ffc9 2652c27e	d51e6c3745841d3b 88c4f673725a4f45	No	N/A	N/A	United States
48	N/A	Executable	95af663e40106b5c 7b116c250816af15 df3c5409	ba845eb55909e3d3 899055e81bab58eb	No	1.2.2	1.2.2	Internal Submission
49	N/A	Executable	8adef9b4cc7c16ac 66fd83bfb9193e07 b1859c81	9db03326a3adf8ea d5b9204a82963054	No	1.2.11	1.2.11	10.108.51.235/32
50	Zlib	Executable	b784599c82bb90d5 267fd70aaa42acc0 c614b5d2	c7d4d685a0af2a09 cbc21cb474358595	No	1.2.3.2027	1.2.3.2027	United States
51	N/A	Executable	a37067183cf51425 86584fb01a5a166e c4333a73	f96897bbc17e8318 9496b94d6cab43c6	Yes	1.2.5	1.2.5	United States
52	N/A	Executable	1f9f7cc9c1e0b798 f91cb14a849649c7 ec99e2fc	a2b3069a61e8cadf 87b1811c4dfb8ec1	No	1.2.5	1.2.5	Internal Submission
53	N/A	Executable	a8e8946cf451d350 e7928f249368ec88 13b906dc	f6e07fb16786685f 1bf201b2565ac4ba	No	1.2.3	1.2.3	Internal Submission
54	N/A	Executable	493a733c1b26c67c cf85cb104babed78 b6c08eaa	ba7d7c9615808e36 3475ff1421e63a99	No	1.2.3	1.2.3	Internal Submission
55	N/A	Executable	b52e893736f9dca3 0d4f6d7d93ec0975 1fbaf6cc	a3ed35fda2e809a8 c908ae7a8709187c	Yes	1.2.3	1.2.3	Internal Submission
56	N/A	Executable	8dc13b906382526e 9c3cc5df3d154cc6 8a4024d4	3e7ad131dd0084c9 a28bdec941b5946e	Yes	1.2.5	1.2.5	United States
57	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?