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sumatrapdf-2.4.exe

Sumatra PDF

The application sumatrapdf-2.4.exe 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, however the file is not signed with an authenticode signature from a trusted source. The installer uses the OpenCandy monitzation platform which will donwload and install offers in the setup for potentially unwanted software including ad/search-supported toolbars. The file has been seen being downloaded from sumatrapdf.1800download.com.
Product:
Sumatra PDF

Version:
1.0.0.0

MD5:
91a971ca3e67fcb2b03ffd57399407be

SHA-1:
bb0a0e1fe2d936c7c632cbc75cef321053495bd1

SHA-256:
46bdc4225648b612e04ed6e45e9db1399f720e61f65bb733bb86ffffed12a102

Scanner detections:
2 / 68

Status:
Potentially unwanted

Explanation:
Packages the OpenCandy software bundler that offers to install additional software and may include web browser add-ons and toolbars which display advertising (based on publisher settings and geo context).

Analysis date:
12/26/2024 9:07:20 PM UTC  (today)

Scan engine
Detection
Engine version

ESET NOD32
Win32/OpenCandy.A potentially unsafe application
8.0.319.0

Reason Heuristics
PUP.OpenCandy.Installer (L)
16.7.6.6

File size:
414.6 KB (424,512 bytes)

File type:
Executable application (Win32 EXE)

Installer:
NSIS (Nullsoft Scriptable Install System)

Common path:
C:\users\{user}\downloads\sumatrapdf-2.4.exe

File PE Metadata
Compilation timestamp:
5/20/2013 2:53:00 AM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
6144:aiucV68qTQq4Rgi5z5gQZ8Sdj3IgfsI01NpTQ8s4BUeCwyJ4go5PTTJ2XYVDhZ:aiuMgQq5i5z5xLj3snLpkYBfCwyJ9+

Entry address:
0x331C

Entry point:
81, EC, D4, 02, 00, 00, 53, 55, 56, 57, 6A, 20, 33, ED, 5E, 89, 6C, 24, 18, C7, 44, 24, 10, 30, 92, 40, 00, 89, 6C, 24, 14, FF, 15, 34, 70, 40, 00, 68, 01, 80, 00, 00, FF, 15, BC, 70, 40, 00, 55, FF, 15, AC, 72, 40, 00, 6A, 08, A3, 98, 92, 42, 00, E8, A8, 2E, 00, 00, A3, E4, 91, 42, 00, 55, 8D, 44, 24, 34, 68, B4, 02, 00, 00, 50, 55, 68, 90, 06, 42, 00, FF, 15, 7C, 71, 40, 00, 68, 7C, 93, 40, 00, 68, E0, 81, 42, 00, E8, 13, 2B, 00, 00, FF, 15, 34, 71, 40, 00, BB, 00, 40, 43, 00, 50, 53, E8, 01, 2B, 00, 00...
 
[+]

Entropy:
7.7996

Packer / compiler:
Nullsoft install system v2.x

Code size:
24 KB (24,576 bytes)

The file sumatrapdf-2.4.exe has been seen being distributed by the following URL.

http://sumatrapdf.1800download.com/get_azure_file/wUiS4WnYccXEwj 8WvauHEA0kxQ8PTK1EBzga5/Zs kkuC2 yon2dBXJ0bjarz1PnG5xF1TcWmPEfvnQeElyPpqxsyPBg D9GzyDkzl5zitgLbbqdPK1joV9cp3wEdJF3ykACw2zZc79XLwW2uSA7ZewtWlcyUMK7MzJQoOIaS0XHt/ctyaf1hi0PCtV2R5ao6x2 w1BHv59wee2L09RMbrYsntZXVWzZfkQbw2lF4f7ID3nxu9M/.../XSyh5oOb2SYjbaQaHNAvMjwpsui1HhlzhVW61NdWVXW1FAawqZju1Q4mLHmJ

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