pdfopener.exe

Fedder Corporation Limited

The application pdfopener.exe by Fedder Limited has been detected as a potentially unwanted program by 6 anti-malware scanners. The program is a setup application that uses the NSIS (Nullsoft Scriptable Install System) installer. This version of the installer will bundle the Ask.com Toolbar, a potentially unwanted web browser extension. The file has been seen being downloaded from www.pdf-opener.com and multiple other hosts.
Publisher:
Fedder Corporation Limited  (signed and verified)

MD5:
efc7cbbfac957ad235da651e1946ea6b

SHA-1:
739433534639ba93abc5cfaa9609f5d08d6c5caf

SHA-256:
1aa2f21e8e14e75e6f6acd45d18f68548df16e60ba676263d68235d2d27524e4

Scanner detections:
6 / 68

Status:
Potentially unwanted

Explanation:
Bundles that Ask.com toolbar as a third-party offer, a web browser extension that may modify a user's search and home pages.

Analysis date:
8/15/2018 6:12:09 AM UTC  (today)

Scan engine
Detection
Engine version

Baidu Antivirus
Adware.Win32.AskToolbar
4.0.3.15511

ESET NOD32
Win32/Bundled.Toolbar.Ask.G potentially unsafe (variant)
9.11605

K7 AntiVirus
Unwanted-Program
13.203.15861

K7 Gateway Antivirus
Unwanted-Program
13.203.15861

Reason Heuristics
Threat.Installer.FedderCorporation
15.5.11.14

Trend Micro House Call
Suspicious_GEN.F47V0507
7.2.131

File size:
3.7 MB (3,902,080 bytes)

File type:
Executable application (Win32 EXE)

Installer:
NSIS (Nullsoft Scriptable Install System)

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

Digital Signature
Authority:
VeriSign, Inc.

Valid from:
9/17/2013 1:00:00 AM

Valid to:
9/18/2015 12:59:59 AM

Subject:
CN=Fedder Corporation Limited, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=Fedder Corporation 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:
22D2B6AFF4224506F133F373AAB07BFB

File PE Metadata
Compilation timestamp:
12/5/2009 10:50:41 PM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
98304:9oCWiAhIl7iklX8DWX7jw1pzwZ/JqbgjlXh:9YhidbWzwL

Entry address:
0x30CB

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, 38, 3F, 42, 00, E8, F1, 2B, 00, 00, A3, 84, 3E, 42, 00, 53, 8D, 44, 24, 34, 68, 60, 01, 00, 00, 50, 53, 68, 30, F4, 41, 00, FF, 15, 58, 71, 40, 00, 68, 54, 91, 40, 00, 68, 80, 36, 42, 00, E8, A4, 28, 00, 00, FF, 15, AC, 70, 40, 00, BF, 00, 90, 42, 00, 50, 57, E8, 92, 28, 00, 00...
 
[+]

Entropy:
7.9849

Packer / compiler:
Nullsoft install system v2.x

Code size:
22.5 KB (23,040 bytes)

The file pdfopener.exe has been seen being distributed by the following 2 URLs.

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