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adobe-reader.exe

The application adobe-reader.exe has been detected as a potentially unwanted program by 4 anti-malware scanners. The program is a setup application that uses the NSIS (Nullsoft Scriptable Install System) installer, however the file is not signed with an authenticode signature from a trusted source. The setup routine uses the RevenYou.Com Pay Per Install platform (OutBrowse) which bundles additional software offers inclduing toolbars, extensions, PC utilities as well as other PUPs. The file has been seen being downloaded from downloads.downloadster.org a known adware distribution point operated by Downloadster.
MD5:
03461cd2ff16662fd329bc814f161352

SHA-1:
cf42b074158d79c028083c6f6b728f4dcf86cc84

SHA-256:
98138e5cb84b3eba4246205df2446f09f686e405e2790488866e080e6cec9aba

Scanner detections:
4 / 68

Status:
Potentially unwanted

Explanation:
Bundles additional adware offers during download and installation using the OutBrowse installer.

Analysis date:
4/19/2024 3:14:46 PM UTC  (today)

Scan engine
Detection
Engine version

avast!
Win32:Evo-gen [Susp]
160518-2

Dr.Web
Detection.Undefined
9.0.1.05190

ESET NOD32
Win32/OutBrowse.M potentially unwanted application
8.0.319.0

VIPRE Antivirus
Threat.4823950
49578

File size:
102 KB (104,407 bytes)

File type:
Executable application (Win32 EXE)

Installer:
NSIS (Nullsoft Scriptable Install System)

Language:
Language Neutral

Common path:
C:\Documents and Settings\{user}\My documents\downloads\adobe-reader.exe

File PE Metadata
Compilation timestamp:
12/5/2009 5:50:52 PM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
3072:agXdZt9P6D3XJWCc5Ky/9XO3jR0eWSzUu/0W7:ae34FcUQ9OzRgW/c0

Entry address:
0x30FA

Entry point:
81, EC, 80, 01, 00, 00, 53, 55, 56, 33, DB, 57, 89, 5C, 24, 18, C7, 44, 24, 10, 60, 91, 40, 00, 33, F6, C6, 44, 24, 14, 20, FF, 15, 30, 70, 40, 00, 68, 01, 80, 00, 00, FF, 15, B0, 70, 40, 00, 53, FF, 15, 7C, 72, 40, 00, 6A, 08, A3, 18, EC, 42, 00, E8, F1, 2B, 00, 00, A3, 64, EB, 42, 00, 53, 8D, 44, 24, 34, 68, 60, 01, 00, 00, 50, 53, 68, 98, 8F, 42, 00, FF, 15, 58, 71, 40, 00, 68, 54, 91, 40, 00, 68, 60, E3, 42, 00, E8, A4, 28, 00, 00, FF, 15, AC, 70, 40, 00, BF, 00, 40, 43, 00, 50, 57, E8, 92, 28, 00, 00...
 
[+]

Entropy:
7.6687

Packer / compiler:
Nullsoft install system v2.x

Code size:
23.5 KB (24,064 bytes)

The file adobe-reader.exe has been seen being distributed by the following URL.

http://downloads.downloadster.org/download.php?id=65f4420d0b291178db2a9fa48e4d875d382e98f0&z=8&p=eyJweSI6ImRvIiwicnMiOiJnIiwicnQiOiJkIiwiYyI6InVzIiwibyI6IndpbnhwIiwiYiI6ImNoMzMiLCJ1X2lkIjoiZG9fNTMyNzA3OGNlYzVlZjQuNjMzOTUyOTYuNjY0OWMwODdiY2VkZjUyMDZhOWY5YzdhODJkZDc0ZDkiLCJwYV9pZCI6IjgiLCJzdF9pZCI6IjAiLCJzcF9pZCI6IjAwMDAtMDgxNDEiLCJ0cyI6MTM5NTA2Njc2NSwia3ciOiIiLCJjdSI6IiIsImNhIjpudWxsfQ

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