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: 22 July 2008 at 3:54 pm

No.	Company	File Type	SHA1	MD5	Digitally Signed	File Version	Product Version	Submitted From
1	N/A	Executable	d7553da303c0b9cf eefc7d642e15075d e5e1c313	cd22b7e95aaa89db aef8c199ca3111f0	No	1.2.8	1.2.8	United States
2	N/A	Executable	8a7b9c352accc443 6ad50a08fdb529bf 1ccc29e2	8abbb9d338c7b5a2 6c8437f320ca0a24	No	N/A	N/A	United States
3	N/A	Executable	313fa8a14e6bb22b 09ff7b7d0f7bcf12 c0f4bcdb	b2a9665ec855646b 450067c5daa9530a	No	1.2.13	1.2.13	United States
4	N/A	Executable	cf6442c1654ac75c 7262e57280e2481c 86d204e1	1be07f4c8d8b15c1 7fb4ba32a8ae4781	No	N/A	N/A	104.238.128.144/32
5	N/A	Executable	55fbb6b4d4838920 19e1ac4e228b5a69 90559a34	581981a1ecf9261d 6f531816e2f87272	No	1.2.13	1.2.13	104.238.128.144/32
6	N/A	Executable	1d02f8054e11cda6 9b3fd98635a38ba2 40497567	9b5f138ff76383c3 9ad2bcb35103c142	No	1.2.12	1.2.12	104.238.128.144/32
7	N/A	Executable	fd68f65e102897ac 8fca3a6e705dd31f ad3a42ad	d81c80092fed3539 f91c85e5473d9973	Yes	1.3.1	1.3.1	104.238.128.144/32
8	NULL	Executable	13f684ea3c4d70d4 da5593c1ad4dfd82 27065b50	f4fcd37f703148a7 a455b15028cb820e	No	1.3.1	1.3.1	United States
9	N/A	Executable	d6063e8105fedac5 eeab167075de05cd 4ce13263	153d9e35a4556356 ab0a4ad4ed49d62d	Yes	1.2.3	1.2.3	United States
10	NULL	Executable	3901e7aed5654a64 66b293c5fddb0e16 216375f2	80ff72995dc5f518 4cbd11df277051a1	No	1.2.3	1.2.3	United States
11	NULL	Executable	f138de2a4b846efe 4d43895e33fbcf80 adfa07a0	9346f859a890610b a46078bd11363c04	No	1.2.13	1.2.13	United States
12	NULL	Executable	76f0794c16ad8a10 659de8f603c64683 30e62af1	edc44c7bda657168 478ede0f739beac0	No	1.2.11	1.2.11	104.238.128.144/32
13	N/A	Executable	f3b45845ca990026 a23c45b2c2deb8be 23c2f4c5	bc09f0511e5fa62f 18660526bbc270ff	Yes	1.2.12	1.2.12	United States
14	N/A	Executable	600615325acc5c19 3f5f5f27d6ef7c85 ebed73fd	5f79a4412b62bbcf 980ce3365b0e2880	No	1.2.11	1.2.11	United States
15	N/A	Executable	2547a1f94fb4f83b 7c133a3e285ee11f aa155e84	8b2a6e8419a8a4e7 d3fd023d97455fb9	No	N/A	N/A	United States
16	NULL	Executable	13f684ea3c4d70d4 da5593c1ad4dfd82 27065b50	f4fcd37f703148a7 a455b15028cb820e	No	1.3.1	1.3.1	104.238.128.144/32
17	GnuWin32	Executable	95c00858d908a60d 4e31c7eba8d40cd8 b76a34fe	8016a30430681d10 eaf54b44cc09bde8	Yes	1.2.3.2532	1.2.3.2532	104.238.128.144/32
18	N/A	Executable	d6063e8105fedac5 eeab167075de05cd 4ce13263	153d9e35a4556356 ab0a4ad4ed49d62d	Yes	1.2.3	1.2.3	104.238.128.144/32
19	NULL	Executable	780d8ca9da93a91d 95773e464e9fe904 2c778585	afe351a62864c541 b029b00ab153d4cc	Yes	1.2.5	1.2.5	United States
20	N/A	Executable	d1ea07eff99ccf67 2f0a5c9162e6c8fa 01d1cf80	bd8fb22081e67c85 796c7975e42101dc	No	1.2.12	1.2.12	United States
21	N/A	Executable	449517e68d345aa1 c813cd83bd213368 b572a832	cba27557b42335e4 514a8ca53cbe1e88	Yes	2.2.2.4	2.2.2.4	104.238.128.144/32
22	NULL	Executable	c79cc94dc31baf5e eb655f4896a53345 81e1f4f3	0dbf6578a19844f5 1c94f8865c100870	No	1.2.7	1.2.7	United States
23	N/A	Executable	d3de8dd2dde3f5be af1e797b96322e92 181d4a2e	400e870f38f4560f 32b07e757615c0ee	Yes	N/A	N/A	104.238.128.144/32
24	N/A	Executable	76691c3b12512961 be5df8edb88ef5fe d5847eb4	eb9787de13b2961e 5d5644cfb32bd296	Yes	1.2.3	1.2.3	104.238.128.144/32
25	NULL	Executable	c54ed841738ec24f 615355e41c79ef5c d2c9fd1d	0ce91b17cbaf3a26 8eff29af17f31525	No	1.2.12	1.2.12	104.238.128.144/32
26	NULL	Executable	6442ed7bed4023dd 581f5694e8e421be fbb07347	355513d67b5d44f3 a6f38551954c9aa7	No	1.2.8	1.2.8	104.238.128.144/32
27	NULL	Executable	af25616f39916c4a 5247ea59604bea25 7e5d2138	44a5221df0961b9a 425127623d3e8213	No	1.2.8	1.2.8	United States
28	NULL	Executable	fcc99a7f8836f480 ce40f299bac6809b 06c56e33	a65513d40c82a1c5 2903830d5bab06c4	No	1.2.11	1.2.11	United States
29	N/A	Executable	bb68ca3b10f3949f 093a65c7278da631 9e76aa5d	ee01439a96e6c269 c5d3d42c46c4516e	No	N/A	N/A	United States
30	N/A	Executable	cf6442c1654ac75c 7262e57280e2481c 86d204e1	1be07f4c8d8b15c1 7fb4ba32a8ae4781	No	N/A	N/A	United States
31	N/A	Executable	434bc4d452a5b328 c627bdb2e9e995b1 cff30e65	b2e3ffe1b2065cae 4731302a1dbce221	No	1.3.1	1.3.1	United States
32	N/A	Executable	99987118166b798f 123012326d082253 d079cd9a	23736f0c6b9bba0b 63845934a687e74f	No	N/A	N/A	United States
33	N/A	Executable	b3b6fba58abce99e df4c17ce14e5d1d7 fc180eb3	bc1a7bd2b3228a34 0636d5769bda324e	No	N/A	N/A	104.238.128.144/32
34	NULL	Executable	cbbce727fd844748 7c7fc68051b24df1 7d043649	d90dad5eea33a178 bac56fff2847d4c2	No	1.2.5	1.2.5	104.238.128.144/32
35	N/A	Executable	80429536cdee9b48 ac41d749bab5436f d7e5384e	d8851061a755a675 a6cdebe9984c882e	No	N/A	N/A	United States
36	NULL	Executable	3780079ab00b6d5c 316d95a1c557486c f604407e	ad2eefc316b62b62 98769c7e1719994a	No	1.2.11	1.2.11	United States
37	N/A	Executable	a84ce1d87cdfaab1 52b66255f56304e1 9ab838ce	a563758944c05d4c 1fd8c3e78ba70e7a	No	1.3.1	1.3.1	United States
38	N/A	Executable	c7448b1e148cb9e5 ab035c0541ab9333 6be532ec	e662027c7e9bab4e f0dcb0719d53ea08	No	1.3.1	1.3.1	104.238.128.144/32
39	N/A	Executable	80161f43dd32e4eb 4f9cf33988758d02 5247f2e0	112d48d9a395de08 9512614e7202478c	Yes	1.2.12	1.2.12	United States
40	N/A	Executable	ba226f287fe9b344 abf2ba46168e42eb 31a938b9	4d921a2460f33f5f 7eb64718f23b62f8	Yes	N/A	N/A	104.238.128.144/32
41	N/A	Executable	d3cafc17c6479dd3 cd2ea4036a19e800 6ce61f7f	5068cc86579b5d3a f09106e41793fa90	No	1.2.12	1.2.12	United States
42	N/A	Executable	c7973579473a5b74 edc3d18ee6f6ccde 86571555	3846c9d72dc03b59 7b06bd6d08f79879	Yes	N/A	N/A	104.238.128.144/32
43	NULL	Executable	d5b8cdbcf43c6751 cdb803080f961973 fb32ba10	e575b3feb62d0257 f3e69c4dba504d90	No	1.3.1	1.3.1	United States
44	NULL	Executable	214d5b904c8bf763 97ce5c3b6e98c55e f62d073c	fb4ff986ad9b18de 18ebb56e70167d40	No	1.2.13	1.2.13	104.238.128.144/32
45	N/A	Executable	e41c7680266d2653 e16412e30b6dfec1 8abfd31c	5e14e5dc82041df0 f2274183cdc72106	No	N/A	N/A	104.238.128.144/32
46	NULL	Executable	143655df8f971994 34a2baec6c7be008 ad62d403	31825f343b5390a9 adba253ff08fac58	No	1.3.1	1.3.1	104.238.128.144/32
47	N/A	Executable	01672ecbb4c6a076 ffa2d71e61ab14e9 ddc112bb	e4a7fcdfaa9b49aa ac1044d3d3b301cd	No	N/A	N/A	104.238.128.144/32
48	NULL	Executable	c6ae92e5388843bc 0d92f06025a1b6fb 161c08e0	8b0076a497a565b7 3ab6c219c069ac50	No	1.3.1	1.3.1	104.238.128.144/32
49	NULL	Executable	d5b8cdbcf43c6751 cdb803080f961973 fb32ba10	e575b3feb62d0257 f3e69c4dba504d90	No	1.3.1	1.3.1	104.238.128.144/32
50	N/A	Executable	c7973579473a5b74 edc3d18ee6f6ccde 86571555	3846c9d72dc03b59 7b06bd6d08f79879	Yes	N/A	N/A	United States
51	NULL	Executable	1523ae71ca322671 022b297e19c8acab e9f2105d	3ecfe1baeab59176 9664567c4e653e6f	No	1.2.1	1.2.1	United States
52	N/A	Executable	e5c71677bfd20f15 10b7f44dbef1d541 79e3216c	d6e3b7e9bc2e2a72 554d7cb5b4ff1e57	Yes	1.2.12	1.2.12	United States
53	N/A	Executable	24907ad72cf09404 b1486a91ad273a91 3740c637	4b851373ba3c40a9 3e40ba4f85e0d3fa	No	1.3.1	1.3.1	104.238.128.144/32
54	NULL	Executable	fd863770fccfaa4f 263be2600753c1a7 692452be	8762d72825f443eb 4ce3795e67613d61	No	1.3.1	1.3.1	United States
55	NULL	Executable	44114db8850ef25d fac85d66368780b2 20b34f79	7d4018ea1b645b7e 23c0c10192e00f9b	No	1.2.13	1.2.13	104.238.128.144/32
56	N/A	Executable	d3411410e8fda304 623c330161c371e4 9b1e0b9a	d97c4caa0fc6a15c 527e989c79f966d1	Yes	1.3.1	1.3.1	104.238.128.144/32
57	N/A	Executable	c8cfe0501fd4b723 2b8fe981ee4f12f1 05e86a61	77696c70da049f46 75fe3db6be9a6d83	Yes	1.2.12	1.2.12	United States
58	Zlib	Executable	b784599c82bb90d5 267fd70aaa42acc0 c614b5d2	c7d4d685a0af2a09 cbc21cb474358595	No	1.2.3.2027	1.2.3.2027	United States
59	N/A	Executable	5ca6a0fb9379dc65 e55962898b838c1d 354227ab	e031887cc20bfb59 e1db7576f49617e5	No	1.2.7	1.2.7	United States
60	N/A	Executable	b3b6fba58abce99e df4c17ce14e5d1d7 fc180eb3	bc1a7bd2b3228a34 0636d5769bda324e	No	N/A	N/A	United States
61	N/A	Executable	2d03074cbb61c47f ece55f18bfec2272 b5c88ff4	d707a42adacfe3f9 7e4025adb82ca4d1	Yes	2.2.2.4	2.2.2.4	104.238.128.144/32
62	NULL	Executable	cbbce727fd844748 7c7fc68051b24df1 7d043649	d90dad5eea33a178 bac56fff2847d4c2	No	1.2.5	1.2.5	United States
63	NULL	Executable	3780079ab00b6d5c 316d95a1c557486c f604407e	ad2eefc316b62b62 98769c7e1719994a	No	1.2.11	1.2.11	104.238.128.144/32
64	NULL	Executable	ace0b28e8f1a6422 e3955e35ef9e695b c1a0f5ee	b5870e4b3921a34c 63aa7e4ef9fd328e	No	1.2.13	1.2.13	United States
65	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?