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pdfdownload.exe

Setup

Itzhak Shternberg

This is a WebPick installer that bundles (with very minimal user consent) a number of adware browser extensions using the JustPlug.it browser framework. The application pdfdownload.exe by Itzhak Shternberg has been detected as adware by 20 anti-malware scanners. The program is a setup application that uses the WebPick InstalleRex (Tarma) installer. The setup program uses Web-Pick's InstalleRex download manager and installer to bundle potentially unwanted ad-supported software which includes toolbars and browser extensions through a pay-per-install monetization scheme.
Publisher:
Premium  (signed by Itzhak Shternberg)

Product:
Setup

Description:
Installer

Version:
2012.11.8.1120

MD5:
6f28620b544d896d006533d611d811aa

SHA-1:
58b8d94ba60b35243dc2356db0258494735bb2e0

SHA-256:
15938c852554321fd8253c9067cbb4f7cb82a512dc8a4e961811618cba61b930

Scanner detections:
20 / 68

Status:
Adware

Explanation:
Uses the InstalleRex from WebPick Internet Holdings to install bundled add-ons including toolbars and other web browser extensions.

Analysis date:
4/26/2024 7:43:39 PM UTC  (today)

Scan engine
Detection
Engine version

Agnitum Outpost
PUA.InstalleRex
7.1.1

Avira AntiVirus
ADWARE/InstallRex.Gen
7.11.157.130

avast!
Win32:InstalleRex-CG [PUP]
140617-1

AVG
Skodna
2015.0.3406

Bkav FE
HW32.CDB
1.3.0.4959

Clam AntiVirus
Win.Adware.Application-425
0.98/19168

Comodo Security
Application.Win32.Bundledz.C
18699

Dr.Web
Adware.Downware.448
9.0.1.05190

ESET NOD32
Win32/InstalleRex.C potentially unwanted application
7.0.302.0

IKARUS anti.virus
PUP.InstallRex
t3scan.1.6.1.0

NANO AntiVirus
Riskware.Win32.Downware.ctkpjt
0.28.0.60475

nProtect
Backdoor/W32.Clack.301512
14.06.27.01

Panda Antivirus
PUP/TSUploader
14.07.22.06

Qihoo 360 Security
Malware.QVM20.Gen
1.0.0.1015

Reason Heuristics
PUP.Installer.ItzhakShternberg.L
14.7.22.6

Rising Antivirus
PE:Malware.InstallRex!6.F9A
23.00.65.14720

Sophos
InstallRex
4.98

Total Defense
Win32/Tnega.aDQSBaD
37.0.11026

VIPRE Antivirus
Threat.4150696
29708

Zillya! Antivirus
Dropper.Dorifel.Win32.4364
2.0.0.1840

File size:
294.4 KB (301,512 bytes)

Product version:
1.0

Copyright:
Copyright © 2010 Premium

Original file name:
TSULoader.exe

File type:
Executable application (Win32 EXE)

Installer:
WebPick InstalleRex (Tarma)

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

Digital Signature
Signed by:
Itzhak Shternberg

Authority:
COMODO CA Limited

Valid from:
6/8/2012 2:00:00 AM

Valid to:
6/9/2013 1:59:59 AM

Subject:
CN=Itzhak Shternberg, O=Itzhak Shternberg, STREET=Belkind 2, L=Tel Aviv, S=Israel, PostalCode=62154, C=IL

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

Serial number:
009DFDC7DD83734FFB61F158A9759A6F69

File PE Metadata
Compilation timestamp:
11/1/2012 10:51:06 PM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
8.0

CTPH (ssdeep):
6144:oQEn9aA+NXagZei5DtsUAIkhZIK5jEgVtdwFBnzsQP6A1J1EqGL:oQW9alagZp9ieNjnIgO7

Entry address:
0x14DB

Entry point:
55, 8B, EC, 81, EC, 2C, 06, 00, 00, 53, 56, 33, DB, 57, 66, 89, 9D, DC, FB, FF, FF, 89, 5D, F4, 89, 5D, FC, FF, 15, 74, 30, 40, 00, A3, 08, 44, 40, 00, FF, 15, 70, 30, 40, 00, 8B, F8, 8D, 45, EC, 50, FF, 15, 6C, 30, 40, 00, FF, 15, 68, 30, 40, 00, 8B, F0, F7, D6, 33, F7, FF, 15, 64, 30, 40, 00, 33, F0, 8B, 45, F0, 33, 45, EC, 68, 04, 01, 00, 00, 33, F0, 8D, 85, D4, F9, FF, FF, 50, 53, FF, 15, 60, 30, 40, 00, 85, C0, 75, 41, FF, 15, 5C, 30, 40, 00, 83, F8, 78, 75, 1A, 68, A8, 32, 40, 00, E8, 43, FB, FF, FF...
 
[+]

Developed / compiled with:
Microsoft Visual C++

Code size:
7.5 KB (7,680 bytes)

The executing file has been seen to make the following network communications in live environments.

TCP (HTTP):
Connects to r1.stylezip.info  (54.186.255.26:80)

TCP (HTTP):
Connects to c1.stylezip.info  (54.186.255.26:80)

 
http://c1.stylezip.info/?step_id=1&installer_id=8046414&publisher_id=046&source_id=0&page_id=0&country_code=US&locale=US&browser_id=4&download_id=24139242&external_id=0&session_id=48278484&hardware_id=56324898&installer_file_name=pdfdownload

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