Malicious PDF — malware analysis report

Static analysis result for SHA-256 c889f634ea202706…

MALICIOUS

PDF

52.6 KB Created: 2020-11-09 19:05:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 919706b61c6236f51e1c7b8df0fea467 SHA-1: cfb8487a418b59e8769c55ddbd2a216934b0c501 SHA-256: c889f634ea20270615e8a024e2c4fdb893249fff0bb9c673fde457cc80c3cd9e
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains numerous external links, including one pointing to 'traffset.ru', suggesting a link farm or redirection for malicious purposes. The ClamAV detection and ML classifier indicate a malicious nature, likely related to phishing or malware delivery. Although no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of an attempt to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8467

Heuristics 4

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://traffset.ru/aws?keyword=world+history+answer+key
    • https://subefivu.weebly.com/uploads/1/3/4/6/134688636/4ee96f.pdf
    • https://cdn-cms.f-static.net/uploads/4366984/normal_5f87330e4e65f.pdf
    • https://cdn-cms.f-static.net/uploads/4446395/normal_5fa439cb3a1eb.pdf
    • https://cdn-cms.f-static.net/uploads/4368218/normal_5f8847cea4718.pdf
    • https://cdn-cms.f-static.net/uploads/4365652/normal_5f87c1224afea.pdf
    • https://cdn-cms.f-static.net/uploads/4377112/normal_5f9657644fd8b.pdf
    • https://cdn-cms.f-static.net/uploads/4424696/normal_5fa4652143328.pdf
    • https://cdn-cms.f-static.net/uploads/4403264/normal_5f93b07a7cb9b.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/b3d557ab-63b7-423b-8b10-d8de822c76a3/20721426286.pdf
    • https://uploads.strikinglycdn.com/files/009b8283-4216-4385-b72a-2ff075c975a1/xesorofavimufezir.pdf
    • https://s3.amazonaws.com/fifuto/sinunafepedufamulavilitu.pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b919.bin
fac29571e0dedadd8d904948e1c3ed7b8b1ec077d1da034d0d59f9e4e335abd2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB919 4972 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.