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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 1 anti-malware scanner with very strong indications that the file is a potential threat. The program is a setup application that uses the WebPick InstalleRex (Tarma) installer. The file has been seen being downloaded from storagenl.info. While running, it connects to the Internet address r1.stylezip.info on port 80 using the HTTP protocol.
Publisher:
Premium  (signed by Itzhak Shternberg)

Product:
Setup

Description:
Installer

Version:
2012.11.8.1120

MD5:
f4fe0f704f4060826fd4b6195d999ac8

SHA-1:
9516e323e5f2b5322b3732b9f297fbebdd5ea40c

SHA-256:
901e42295cf56c899c19db56230d987d9f94cf6671c36392773b4b2625d387f1

Scanner detections:
1 / 68

Status:
Adware

Explanation:
Uses Web-Pick's 'File Product', an Installer which wraps various products and downloads and installs it silently through the process, hosted on TusFiles.

Analysis date:
11/23/2024 10:47:15 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.WebPick (M)
16.8.9.14

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+NXagZei5DtsUAIkhZIK5jEgVtdwFBnzsQP6A1J1EqGf:QQW9alagZp9ieNjnIgOv

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/.../?affiliate_id=eb3

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=309003650&publisher_id=090&source_id=0&page_id=0&country_code=US&locale=US&browser_id=4&download_id=927010950&external_id=0&session_id=1854021900&hardware_id=2163025550&installer_file_name=pdfdownload

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