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freepdfreader_installer.exe

Tripro Ltd

The application freepdfreader_installer.exe by Tripro 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 NSIS (Nullsoft Scriptable Install System) installer. The file has been seen being downloaded from www.pdfwork.com.
Publisher:
Tripro Ltd  (signed and verified)

MD5:
5d4823dc06dc61981f6f6ab919f8fdba

SHA-1:
d4dc35e53c25caa277d137fbe82edff5aa04f87c

SHA-256:
0ab8e25ca7abeeaa52a453ec079ffc503749935d691d9fc24d5a85e70c4645ed

Scanner detections:
1 / 68

Status:
Adware

Note:
Our current pool of anti-malware engines have not currently detected this file, however based on our own detection heuristics we feel that this file is unwanted.

Analysis date:
11/24/2024 7:03:23 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Tripro.Installer (M)
15.12.13.13

File size:
2.8 MB (2,980,360 bytes)

File type:
Executable application (Win32 EXE)

Installer:
NSIS (Nullsoft Scriptable Install System)

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

Digital Signature
Signed by:
Tripro Ltd

Authority:
VeriSign, Inc.

Valid from:
9/29/2013 9:00:00 PM

Valid to:
9/30/2015 8:59:59 PM

Subject:
CN=Tripro Ltd, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=Tripro Ltd, L=Hong Kong, S=Hong Kong, C=HK

Issuer:
CN=VeriSign Class 3 Code Signing 2010 CA, OU=Terms of use at https://www.verisign.com/rpa (c)10, OU=VeriSign Trust Network, O="VeriSign, Inc.", C=US

Serial number:
1189C239E85299F4464322E094264D91

File PE Metadata
Compilation timestamp:
12/5/2009 8:50:52 PM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
49152:p+scpBLTdvI/BX4u0Xfqv8bqtqXs5fkLSyIwy5ng3yWTHeMsaMR45W0rEY+j/:YXlI/BIu0va8Wtms5mtqnymMrDWsEPT

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...
 
[+]

Packer / compiler:
Nullsoft install system v2.x

Code size:
23.5 KB (24,064 bytes)

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

http://www.pdfwork.com/FreePDFReader_Installer.exe

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