home

pdfopener.exe

United Starex Limited

The application pdfopener.exe by United Starex Limited has been detected as a potentially unwanted program by 2 anti-malware scanners. The program is a setup application that uses the NSIS (Nullsoft Scriptable Install System) installer. The file has been seen being downloaded from pdfopener.s3.amazonaws.com.
Publisher:
United Starex Limited  (signed and verified)

MD5:
26c15e0ac4a87b0e2169f197d6b7c6d7

SHA-1:
47e7c6d8a743e10418ee14953ac56ae2cd4078b9

SHA-256:
50b6164e3a1e75dd9530a282154240d45a36c97aef786d6100925d543c3a4f7e

Scanner detections:
2 / 68

Status:
Potentially unwanted

Analysis date:
4/25/2024 9:04:41 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.UnitedStarex.Installer.Meta (M)
16.2.27.17

Sophos
PUA 'United Starex Freeware Installer'
5.23

File size:
2 MB (2,080,104 bytes)

File type:
Executable application (Win32 EXE)

Installer:
NSIS (Nullsoft Scriptable Install System)

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

Digital Signature
Signed by:
United Starex Limited

Authority:
VeriSign, Inc.

Valid from:
10/14/2011 1:00:00 AM

Valid to:
10/13/2013 12:59:59 AM

Subject:
CN=United Starex Limited, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=United Starex Limited, 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:
104297DF3220064E2CCA90FE4D98D536

File PE Metadata
Compilation timestamp:
12/5/2009 10:50:46 PM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
49152:VQUQK11ggzBy6z2QvUV3/gjSBR+CHi4Ysdp1OSH:VQde6gVsRV/gG/hHiupYy

Entry address:
0x323C

Entry point:
81, EC, 80, 01, 00, 00, 53, 55, 56, 33, DB, 57, 89, 5C, 24, 18, C7, 44, 24, 10, 30, 91, 40, 00, 33, F6, C6, 44, 24, 14, 20, FF, 15, 30, 70, 40, 00, 68, 01, 80, 00, 00, FF, 15, B4, 70, 40, 00, 53, FF, 15, 7C, 72, 40, 00, 6A, 08, A3, 58, 3F, 42, 00, E8, 09, 2C, 00, 00, A3, A4, 3E, 42, 00, 53, 8D, 44, 24, 34, 68, 60, 01, 00, 00, 50, 53, 68, 58, F4, 41, 00, FF, 15, 58, 71, 40, 00, 68, B8, 91, 40, 00, 68, A0, 36, 42, 00, E8, BC, 28, 00, 00, FF, 15, B0, 70, 40, 00, BF, 00, 90, 42, 00, 50, 57, E8, AA, 28, 00, 00...
 
[+]

Entropy:
7.9580

Packer / compiler:
Nullsoft install system v2.x

Code size:
23 KB (23,552 bytes)

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

http://pdfopener.s3.amazonaws.com/PDFOpener.exe

Remove pdfopener.exe - Powered by Reason Core Security
herdProtect is a second line of defense malware removal platform powered by 68 anti-malware engines in the cloud. Since no single anti-malware program is perfect 100% of the time, herdProtect utilizes a 'herd' of multiple engines to guarantee the widest coverage and the earliest possible detection.