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

Safe 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: 23 December 2008 at 9:46 pm

No.	Company	File Type	SHA1	MD5	Digitally Signed	File Version	Product Version	Submitted From
1	N/A	Executable	9d4cf9cb073c029f 73568c1f9555ac91 bc43b121	052d7f66ddd098b8 6fbafa4935c5fd77	Yes	1.3.1	1.3.1	United States
2	N/A	Executable	f54f7e052ae3e185 77472cce810d1942 815218bc	d633a2f261418ac5 4bcc93cb97859b72	Yes	2.2.2.5	2.2.2.5	United States
3	NULL	Executable	6442ed7bed4023dd 581f5694e8e421be fbb07347	355513d67b5d44f3 a6f38551954c9aa7	No	1.2.8	1.2.8	United States
4	NULL	Executable	7cb68a5ad928172c e7b6f2afc847ae44 9021b58d	4942b3cfa584f1a2 6653d3752ac0735c	Yes	1.3.1	1.3.1	United States
5	NULL	Executable	c54ed841738ec24f 615355e41c79ef5c d2c9fd1d	0ce91b17cbaf3a26 8eff29af17f31525	No	1.2.12	1.2.12	United States
6	NULL	Executable	685477bcaa60521e 1bad72661c66ebb5 625f3b45	89261d11d0ff3365 1717ed8bb5678e2f	No	1.2.11	1.2.11	104.238.128.144/32
7	N/A	Executable	b734503184d3afa4 c8490076fd7f65ff 248d4506	35e7667d08029c92 6b14cf3ae08458a6	Yes	1.2.13	1.2.13	United States
8	N/A	Executable	fcdc943b4713fc0d 052b86aa64f8bdc0 bbb2c68e	2a1a44f60f7547f4 99debb19be6d0a39	Yes	1.3.1	1.3.1	United States
9	NULL	Executable	efd870a6f9afac3d e123ca452bb695a4 6b6105fa	98874bc7141aebc6 13ec9e1218a9326a	No	1.2.11	1.2.11	United States
10	N/A	Executable	bb68ca3b10f3949f 093a65c7278da631 9e76aa5d	ee01439a96e6c269 c5d3d42c46c4516e	No	N/A	N/A	104.238.128.144/32
11	N/A	Executable	c1859466621b9e67 29e77e6f0445ec2b d3c91280	d562d68f8e7e2e9a 5ef5940fbccaf76d	Yes	1.2.5	1.2.5	United States
12	N/A	Executable	0a9da9e96c27c794 547d21b1fe1bfb00 b941d78a	0fc71e1ed0eb0869 268164931b26ddf8	Yes	1.3.1	1.3.1	United States
13	NULL	Executable	3e696df4bf3d5c47 d5635868bfe05ed2 e760581d	a95c88f22f0a18e0 422013bfa0e094f9	No	1.2.11	1.2.11	United States
14	N/A	Executable	c13792790be73aac 3a066b8d98472766 6cf75ef0	9c2685d6141f2d33 1614d93001273f89	Yes	2.2.2.5	2.2.2.5	United States
15	NULL	Executable	eea4face12eaa9c6 2316fc7e1fbb2811 e8336d2a	5fe91a0a68b24918 9a3473c37fdc5f08	No	1.2.11	1.2.11	United States
16	NULL	Executable	4dedcbf051de60e4 bcb32d49775f67f0 0f457703	bc81a91937c1abff 5fe63112dbce9b44	Yes	2.2.11	1.2.11	104.238.128.144/32
17	N/A	Executable	6923eae8f514fe0f 89a4c555136c087c edc4cafa	d1227ec9ba6d706d 134303c0d249ba88	Yes	1.2.13	1.2.13	United States
18	NULL	Executable	0eb64c4cc873ca05 f069b6f244406de8 c76b1334	da417dea88cbc304 31d9d7df6d5be340	No	1.3.1	1.3.1	United States
19	NULL	Executable	4f4fb1c7a6415015 7ba0dd2d77993de7 4773ae0d	39f609ffea0cf97b 2fb3e5367a141735	Yes	1.3.1	1.3.1	104.238.128.144/32
20	N/A	Executable	537d806267ed1a2c 8e8ed807a20afe12 b36e9ec0	decca578c143661a 33a2c2094f327de7	Yes	1.2.13	1.2.13	United States
21	NULL	Executable	f69bb23a54f36a7d 2f66cb809355c6c1 fc4cb442	61592c28128dd820 8756efa3b064bb49	Yes	2.2.11	1.2.11	United States
22	N/A	Executable	0222dc8a55430718 85d858cfcac154e7 a62c4a93	8c41c787a8c26da5 f18930ef60b80205	Yes	1.2.11	1.2.11	United States
23	NULL	Executable	f138de2a4b846efe 4d43895e33fbcf80 adfa07a0	9346f859a890610b a46078bd11363c04	No	1.2.13	1.2.13	104.238.128.144/32
24	N/A	Executable	dd2d54668258b989 cc500c132d9a686b abe67fa5	13cd5ab2da5a98f5 f76aa6f987187461	No	1.2.5	1.2.5	United States
25	NULL	Executable	75fbf1fe1c5eb014 2e90e6ca9b9cc95f 27d91ffa	d3796b726ca1c782 9679958b4480096c	No	1.2.8	1.2.8	United States
26	N/A	Executable	66cb829ee6b8b5c6 8c362b452ea402ad 06a8a636	016da8cb6857ee22 f94702eea91500ab	Yes	1.2.12.2	1.2.12.2	United States
27	NULL	Executable	363bdd282692d618 3d57d9fa7515b058 b40a1e82	ac385cd6f4f3c0ca 2830ee7a658c74e8	No	1.3.1	1.3.1	United States
28	NULL	Executable	af25616f39916c4a 5247ea59604bea25 7e5d2138	44a5221df0961b9a 425127623d3e8213	No	1.2.8	1.2.8	United States
29	N/A	Executable	15b530eece65921b 0e83df1ba2d07c5a dcc510ba	d3a3e58a7a54a9d2 52a15f7ad8cd4f15	No	1.2.8	1.2.8	104.238.128.144/32
30	NULL	Executable	32119ecd7c92e58c f87e713414752aa6 aafc097d	795b0d247c12984d 5068624e6c711c20	Yes	2.2.11	1.2.11	104.238.128.144/32
31	N/A	Executable	9c2d047ce1c3afcc c3c9e0f51813777c 8298af2c	12a1924393844d14 42e2bc45312cdce7	No	N/A	N/A	104.238.128.144/32
32	N/A	Executable	91aed40cc6a20439 1b0c42e2c3cf1780 59ced04a	23521a9637b79abe ecac9806e1386c2c	No	1.3.1	1.3.1	United States
33	N/A	Executable	85cf8bea378c2350 ff6dd191b60913be 155594fc	061574f130df7999 3e4726ae459f43e4	No	1.2.6	1.2.6	United States
34	N/A	Executable	c5bfb7d49d729a20 5cb43d12e5740fe9 6caf5ca9	a6e203a1800a32c3 95e390f96c6bc454	Yes	1.2.13	1.2.13	United States
35	N/A	Executable	f9cfeeeb29d3bffc cc3e0baaf4759eb2 ab358a87	94f94eacbf9e3318 75bfca2bc92a15f2	Yes	1.2.3	1.2.3	United States
36	NULL	Executable	0ede714973d48cca af3770e39c7e59d8 7926d0f6	723e1fbfc7ccecb3 0e56f9568dfcbfa8	Yes	2.2.11	1.2.11	104.238.128.144/32
37	NULL	Executable	5e18857abda3dd82 57a6a97a3f8ac4b2 e7af6f11	da2420d7180f3125 7eba62454549c2e7	Yes	1.3.1	1.3.1	United States
38	NULL	Executable	365d44694e1875fa bebaacc136472d7d a8e4cc56	bd10dc4bfd2ec8c7 4ecfbfd16b09834f	No	1.2.13	1.2.13	104.238.128.144/32
39	NULL	Executable	3d25905afa89b02f b8a33ca1d0c77b38 e4799973	c6f192fb3e7c0794 7b9bb8e80c1e7e9d	No	1.2.11	1.2.11	United States
40	N/A	Executable	dc5b69f0c7fbbef8 58a58f9949696323 c37cca6f	a607a73a2bf27d65 903396082bd6a065	No	1.3.1	1.3.1	104.238.128.144/32
41	NULL	Executable	44114db8850ef25d fac85d66368780b2 20b34f79	7d4018ea1b645b7e 23c0c10192e00f9b	No	1.2.13	1.2.13	United States
42	N/A	Executable	a4d2d34e0a0cbae0 0dfc229194d1a819 3b94784d	511befa34b0e0254 24edea911d301d79	Yes	N/A	N/A	United States
43	NULL	Executable	41ed7d4211c55029 55f1b54ff3c31e78 5c3ee68b	be069aca50ddfd40 43aada13edfc7438	No	1.2.11	1.2.11	United States
44	N/A	Executable	dc5b69f0c7fbbef8 58a58f9949696323 c37cca6f	a607a73a2bf27d65 903396082bd6a065	No	1.3.1	1.3.1	United States
45	N/A	Executable	be75a657cf495888 14d6c311ecbffdbd c97f5754	9dc14d9b61f48f27 317ed25c53361158	Yes	1.3	1.3	United States
46	N/A	Executable	a4d2d34e0a0cbae0 0dfc229194d1a819 3b94784d	511befa34b0e0254 24edea911d301d79	Yes	N/A	N/A	104.238.128.144/32
47	NULL	Executable	42418f880808afae d28e3111d71bcb79 428cec9c	cec7d9b4c67de3ee 0015c337100c9479	No	1.2.6	1.2.6	United States
48	NULL	Executable	c6ae92e5388843bc 0d92f06025a1b6fb 161c08e0	8b0076a497a565b7 3ab6c219c069ac50	No	1.3.1	1.3.1	United States
49	N/A	Executable	7b097090cf487f7f 0dc3fd6dd5359a40 dea3fb6c	2c23bc31387b10ea 2f4c333cfd5a95ad	No	1.3.1	1.3.1	United States
50	N/A	Executable	b04dd598a77e6669 8a2353b9c7b32b78 c6640c75	5f2d5b9d342c6e4a 1bc332a940b3598f	Yes	1.3.1	1.3.1	United States
51	N/A	Executable	b3b6fba58abce99e df4c17ce14e5d1d7 fc180eb3	bc1a7bd2b3228a34 0636d5769bda324e	No	N/A	N/A	United States
52	NULL	Executable	cbbce727fd844748 7c7fc68051b24df1 7d043649	d90dad5eea33a178 bac56fff2847d4c2	No	1.2.5	1.2.5	United States
53	Zlib	Executable	3045634965ca1b0d 5f31a863ab1c3440 5f20ec03	f5b8b7054675d6aa f4ce3e727395f402	No	1.2.1.1429	1.2.1.1429	United States
54	N/A	Executable	3306c6aca3937d8b ca11dd076effb037 46367b9f	66a3477a51e8b7d4 586edf4659cde8d5	No	N/A	N/A	United States

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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?