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pdfreadersetup.exe

Best Free Downloads

The file is a bundle distribution and utilizes the installCore download manager to distribute this potentially unwanted software. The application pdfreadersetup.exe by Best Free Downloads has been detected as adware by 13 anti-malware scanners. The program is a setup application that uses the installCore installer. The setup program uses the InstallCore engine which may bundle additional software offers including toolbars and browser extensions. The file has been seen being downloaded from lb2-media-dist-918519637.eu-west-1.elb.amazonaws.com.
Publisher:
Best Free Downloads  (signed and verified)

MD5:
52be02bb276a382325bd0f61363dc9bf

SHA-1:
d29ebeb8cc420ef3b8265dd67929dc05a4a46343

SHA-256:
5d1dd9bd92a5b7b2d25eae379be0d5aed848d1549f22d3d6a9f04d7e219b1b8c

Scanner detections:
13 / 68

Status:
Adware

Explanation:
Uses the InstallCore download manager to install additional potentially unwanted software which may include extensions such as DealPly and various toolbars.

Description:
This is also known as bundleware, or downloadware, which is an downloader designed to simply deliver ad-supported offers in the setup routine of an otherwise legitimate software.

Analysis date:
4/26/2024 6:49:05 AM UTC  (today)

Scan engine
Detection
Engine version

Avira AntiVirus
ADWARE/InstallCore.Gen9
7.11.163.164

AVG
Generic
2015.0.3404

Baidu Antivirus
Adware.Win32.InstallCore
4.0.3.14723

Comodo Security
Application.Win32.InstallCore.LM
18948

Dr.Web
Trojan.Packed.24524
9.0.1.05190

ESET NOD32
Win32/InstallCore.PK potentially unwanted application
7.0.302.0

K7 AntiVirus
Unwanted-Program
13.181.12819

Malwarebytes
PUP.Optional.InstallCore
v2014.07.23.12

McAfee
CryptInno
5600.7060

Reason Heuristics
PUP.Installer.BestFreeDownloads.O
14.7.23.11

Sophos
Install Core Click run software
4.98

SUPERAntiSpyware
PUP.InstallCore/Variant
10466

VIPRE Antivirus
Threat.4788237
31208

File size:
687.1 KB (703,584 bytes)

File type:
Executable application (Win32 EXE)

Bundler/Installer:
installCore (using Inno Setup)

Language:
Language Neutral

Common path:
C:\users\{user}\downloads\pdfreadersetup.exe

Digital Signature
Signed by:
Best Free Downloads

Authority:
COMODO CA Limited

Valid from:
10/21/2013 7:00:00 AM

Valid to:
10/22/2014 6:59:59 AM

Subject:
CN=Best Free Downloads, O=Best Free Downloads, STREET=Lilienblum 28, L=Tel Aviv, S=Israel, PostalCode=6513307, C=IL

Issuer:
CN=COMODO Code Signing CA 2, O=COMODO CA Limited, L=Salford, S=Greater Manchester, C=GB

Serial number:
046CC4AA2B722C5117786BD75A823929

File PE Metadata
Compilation timestamp:
6/20/1992 5:22:17 AM

OS version:
1.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
2.25

CTPH (ssdeep):
12288:+BvpmVZUf54c7mwSWiNKE9G1QS5CwQTIrLHRUSsptFOcFFsHoo7BX:+BvADUmBwTiNlAGSs6USE6cbW

Entry address:
0x9C40

Entry point:
55, 8B, EC, 83, C4, C4, 53, 56, 57, 33, C0, 89, 45, F0, 89, 45, DC, E8, 86, 94, FF, FF, E8, 8D, A6, FF, FF, E8, 1C, A9, FF, FF, E8, 53, C9, FF, FF, E8, 9A, C9, FF, FF, E8, C9, F2, FF, FF, E8, 30, F4, FF, FF, 33, C0, 55, 68, FC, A2, 40, 00, 64, FF, 30, 64, 89, 20, 33, D2, 55, 68, C5, A2, 40, 00, 64, FF, 32, 64, 89, 22, A1, 14, C0, 40, 00, E8, 96, FE, FF, FF, E8, C9, FA, FF, FF, 8D, 55, F0, 33, C0, E8, 83, CF, FF, FF, 8B, 55, F0, B8, 24, CE, 40, 00, E8, 32, 95, FF, FF, 6A, 02, 6A, 00, 6A, 01, 8B, 0D, 24, CE...
 
[+]

Entropy:
7.8688

Packer / compiler:
Inno Setup v5.x - Installer Maker

Code size:
37 KB (37,888 bytes)

The file pdfreadersetup.exe has been seen being distributed by the following URL.

http://lb2-media-dist-918519637.eu-west-1.elb.amazonaws.com/pdf-reader/adbr4/.../?dl=1&lg=en&chnl=rmx144969247&SourceId=355&CreativeId=27209564&LineItemId=9494009&SectionId=144969247&dp=00007e05c9099baa2462e81e0ed01cd7cf73e&webid=ecbfccf9-fb5b-b3a1-fd16-316bad1c6963

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