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adobe reader.exe

The application adobe reader.exe has been detected as a potentially unwanted program by 3 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 www.1freedown.com.
MD5:
0fcf6f42c4803f3f30052a7f25ab9a1b

SHA-1:
3cc87d48876c9cf7de5aed1b1955caa0641962c2

SHA-256:
66ae5bd9ee99cd4752be5e326b335fa2fea80fdeedf83c35d002767d6325f454

Scanner detections:
3 / 68

Status:
Potentially unwanted

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

Analysis date:
4/23/2024 7:46:13 AM UTC  (today)

Scan engine
Detection
Engine version

Dr.Web
Detection.Undefined
9.0.1.05190

ESET NOD32
Win32/OutBrowse.G potentially unwanted application
8.0.319.0

Microsoft Security Essentials
Threat.Undefined
1.225.1489.0

File size:
966.2 KB (989,380 bytes)

File type:
Executable application (Win32 EXE)

Installer:
NSIS (Nullsoft Scriptable Install System)

Language:
Language Neutral

File PE Metadata
Compilation timestamp:
12/5/2009 4:50:52 PM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
24576:S6otnqUABc227+aoloS07p+V0ahIDiZlj9zWKwE6BZ7Z:XoZqrBcH7+aqoSggSahQiZ1FZwpZ7Z

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...
 
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Entropy:
7.9252

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://www.1freedown.com/.../download.php?id=5343010a408d7&i=adus3

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