Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6a2ae130eed7c08…

MALICIOUS

PDF

58.6 KB Created: 2020-11-24 14:21:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: caaa0ff309c6a506dd0db90e528c0761 SHA-1: e0d0cda992eccbe99741bccf99604f7e0bda9ff6 SHA-256: d6a2ae130eed7c0803ed3476a2322808c40e5a87d1db96da4ab2df640a827b52
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF is identified as an image-only lure, typical for phishing campaigns. It contains numerous external links, including one pointing to 'trafffe.ru', suggesting a redirection to a malicious site. The ClamAV detection and ML classifier further support its malicious nature, likely serving as a dropper or phishing page.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8062

Heuristics 5

  • 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-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 58 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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://trafffe.ru/aws?utm_term=bookworm+adventures+apk+free++for+android
    • https://sulidisige.weebly.com/uploads/1/3/4/3/134318683/moxawifibaxo.pdf
    • https://pujazoja.weebly.com/uploads/1/3/4/8/134880569/popapine-jelema.pdf
    • https://muwubuzegutan.weebly.com/uploads/1/3/4/6/134649477/vuxixisirak.pdf
    • https://tiwilofudux.weebly.com/uploads/1/3/1/6/131606348/2391511.pdf
    • https://boxatikavizag.weebly.com/uploads/1/3/4/6/134680825/91abc258.pdf
    • https://s3.amazonaws.com/kelukakeb/84845937187.pdf
    • https://uploads.strikinglycdn.com/files/dba21e49-637f-43aa-8049-0d2cb8ccd5bf/verogu.pdf
    • https://s3.amazonaws.com/rujimidujek/numax_sfr2190_nails.pdf
    • https://s3.amazonaws.com/jolozidabi/workplace_accident_incident_report_sample.pdf
    • https://s3.amazonaws.com/pilazi/basic_electronics_book_bangla.pdf
    • https://uploads.strikinglycdn.com/files/037f07f9-4e36-4207-8027-57d97f9471da/wipozopunakogibofojilipam.pdf