pdfreader_setup.exe

PDF Reader

Download Helper

This is part of the Air Installer, a download manager which bundles applications with offers for additional 3rd party software, mostly unwanted adware, and may be installed with minimal consent. The application pdfreader_setup.exe by Download Helper 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 AirInstaller Download Manager installer. It is also typically executed from an Internet Explorer cache folder. The file has been seen being downloaded from everydownload.softwaredelivery15.com.
Publisher:
Download Helper  (signed and verified)

Product:
PDF Reader

Version:
3.0.0.136

MD5:
7a0c1937a297c08b5866cd9c79a5c7d6

SHA-1:
cdf681064b4b251340d354eebf0ab21d4008279c

SHA-256:
f4a4866aba84c738211a85bd5e3e38ef5298ba8533bb53854489d72e07d277d7

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.

Description:
This is an installer which may bundle legitimate applications with offers for additional 3rd-party applications that may be unwanted by the user. While the installer contains an 'opt-out' feature this is not set be defult and is usually overlooked.

Analysis date:
12/26/2024 4:08:29 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Air Software.DownloadHelper.Bundler (M)
16.1.15.22

File size:
1.1 MB (1,136,352 bytes)

Product version:
3.0.0.136

Copyright:
(c) Download Helper

File type:
Executable application (Win32 EXE)

Bundler/Installer:
AirInstaller Download Manager

Language:
Language Neutral

Common path:
C:\users\{user}\appdata\local\microsoft\windows\temporary internet files\content.ie5\{random}\pdfreader_setup.exe

Digital Signature
Signed by:

Authority:
COMODO CA Limited

Valid from:
12/21/2015 7:00:00 PM

Valid to:
12/21/2016 6:59:59 PM

Subject:
CN=Download Helper, O=Download Helper, STREET=536 Herald St Unit 308, L=Victoria, S=BC, PostalCode=V8W1S5, C=CA

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

Serial number:
7403D5D9F1275B32252F3B40F9630A45

File PE Metadata
Compilation timestamp:
1/30/2013 9:21:56 AM

OS version:
5.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
2.25

CTPH (ssdeep):
24576:LxGkT4FC++ORthkGSjbq5GshS6veCxRGUFVOCKmC2P8eyCwO6:k87un8HshS6VlFVOCKPCa

Entry address:
0x113BC

Entry point:
55, 8B, EC, 83, C4, A4, 53, 56, 57, 33, C0, 89, 45, C4, 89, 45, C0, 89, 45, A4, 89, 45, D0, 89, 45, C8, 89, 45, CC, 89, 45, D4, 89, 45, D8, 89, 45, EC, B8, 2C, 00, 41, 00, E8, E8, 51, FF, FF, 33, C0, 55, 68, 9E, 1A, 41, 00, 64, FF, 30, 64, 89, 20, 33, D2, 55, 68, 5A, 1A, 41, 00, 64, FF, 32, 64, 89, 22, A1, 48, 5B, 41, 00, E8, 16, D8, FF, FF, E8, 65, D3, FF, FF, 80, 3D, DC, 2A, 41, 00, 00, 74, 0C, E8, 2B, D9, FF, FF, 33, C0, E8, 80, 32, FF, FF, 8D, 55, EC, 33, C0, E8, E2, A3, FF, FF, 8B, 55, EC, B8, 50, 86...
 
[+]

Entropy:
6.9634

Developed / compiled with:
Microsoft Visual C++

Code size:
65.5 KB (67,072 bytes)

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

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