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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 which inject ads in the browser. The application pdfdownload.exe by Itzhak Shternberg has been detected as adware by 26 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:
1293b18a4541313815f7dcf8e0641cf4

SHA-1:
7ca6d14b61b37a203b8414fe504e4880405ad7b6

SHA-256:
cbef3b6b4c2e29a6a2a475e7d524b6acc821c9b6698ea9e98a15cf61a87136f5

Scanner detections:
26 / 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:
5/10/2024 7:07:19 AM UTC  (today)

Scan engine
Detection
Engine version

Agnitum Outpost
Riskware.InstallMate
7.1.1

Avira AntiVirus
ADWARE/InstallRex.Gen
7.11.141.146

avast!
Win32:InstalleRex-AW [PUP]
2014.9-160121

AVG
Skodna
2017.0.2858

Bkav FE
W32.FamVT.AntiFWK.Trojan
1.3.0.6379

Clam AntiVirus
Win.Adware.Application-425
0.98/20532

Comodo Security
Application.Win32.Bundledz.C
18053

Dr.Web
Trojan.Webpick.7217
9.0.1.021

ESET NOD32
Win32/InstalleRex.C potentially unwanted application
10.7.0.302.0

G Data
Win32.Application.InstalleRex
16.1.25

IKARUS anti.virus
PUP.InstallRex
t3scan.1.6.1.0

K7 AntiVirus
Unwanted-Program
13.204.16089

Malwarebytes
PUP.Optional.InstallRex
v2016.01.21.03

NANO AntiVirus
Riskware.Win32.Downware.cvbqyt
0.28.0.58873

nProtect
Backdoor/W32.Clack.301512
14.06.27.01

Panda Antivirus
PUP/TSUploader
16.01.21.03

Qihoo 360 Security
Malware.QVM20.Gen
1.0.0.1015

Quick Heal
PUA.Itzhakshte.Gen
1.16.14.00

Reason Heuristics
PUP.WebPick.ItzhakShternberg.Installer (M)
16.1.21.3

Rising Antivirus
PE:Malware.InstallRex!6.F9A
23.00.65.16119

Sophos
PUA 'InstallRex'
5.14

SUPERAntiSpyware
Trojan.Agent/Gen-InstallMate
9373

Total Defense
Win32/Tnega.aDQSBaD
37.0.11026

Trend Micro House Call
HV_INSTALLEREX_CI05361D.RDXN
7.2.21

VIPRE Antivirus
Threat.4150696
40552

Zillya! Antivirus
Dropper.Dorifel.Win32.4364
2.0.0.2199

File size:
294.4 KB (301,504 bytes)

Product version:
1.0

Copyright:
Copyright © 2010 Premium

Original file name:
TSULoader.exe

File type:
Executable application (Win32 EXE)

Installer:
WebPick InstalleRex (Tarma)

Language:
Language Neutral

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

Digital Signature
Signed by:
Itzhak Shternberg

Authority:
COMODO CA Limited

Valid from:
6/8/2012 5:30:00 AM

Valid to:
6/9/2013 5:29:59 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:
11/2/2012 3:21:06 AM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
8.0

CTPH (ssdeep):
6144:QQEn9aA+NXagZei5DtsUAIkhZIK5jEgVtdwFBnzsQP6A1J1EqGH:QQW9alagZp9ieNjnIgO3

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...
 
[+]

Entropy:
7.9592

Developed / compiled with:
Microsoft Visual C++

Code size:
7.5 KB (7,680 bytes)

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

http://storagenl.info/.../

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

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

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