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pdfdownload.exe

CLSoft

Moshe Karaso

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 Moshe Karaso 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. While running, it connects to the Internet address r1.stylezip.info on port 80 using the HTTP protocol.
Publisher:
CLSoft LTD  (signed by Moshe Karaso)

Product:
CLSoft

Description:
Installer

Version:
2013.1.16.1748

MD5:
e480cfdb52e8f116d5b45a15ebed14fc

SHA-1:
f5779730e2c936381a3863a64a92eb7222de6728

SHA-256:
84610261a65d7ab5b10d2421de8994419c7d69acec0728e4aac8f19aeb8416c9

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:
4/23/2024 8:34:01 PM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.WebPick (M)
17.3.14.1

File size:
310.1 KB (317,512 bytes)

Product version:
1.0

Copyright:
Copyright © 2012 CLSoft LTD

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:
Moshe Karaso

Authority:
COMODO CA Limited

Valid from:
11/15/2012 1:00:00 AM

Valid to:
11/16/2013 12:59:59 AM

Subject:
CN=Moshe Karaso, O=Moshe Karaso, STREET=Nahum 19, L=Ramat Gan, S=center, PostalCode=52233, C=IL

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

Serial number:
55036D3C9B5C690240A409061736347F

File PE Metadata
Compilation timestamp:
11/30/2012 2:03:49 AM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
8.0

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 communication in live environments.

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

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