Malicious PDF — malware analysis report

Static analysis result for SHA-256 f04defaea963e09f…

MALICIOUS

PDF

50.6 KB Created: 2020-11-10 08:00:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 21aa2a467d4a17973bcfd907903161f8 SHA-1: d2c9c2a8d81bf32c54cee2807acf26917d1ecea2 SHA-256: f04defaea963e09f15352cf8da89ac8122d3d704413dc11cf42976cbdeb7b299
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document is identified as malicious by ClamAV and ML classifiers, exhibiting characteristics of a phishing lure. The 'PDF_IMAGE_LURE' heuristic indicates it presents as an image-only document with a click-outward action, typical for tricking users into visiting attacker-controlled URLs. The presence of numerous external links, including one to 'traffking.ru', suggests a link farm or redirection mechanism to facilitate malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6098

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-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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 50 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://traffking.ru/aws?keyword=strike+the+last+word+meaning+in+congress
    • https://cdn-cms.f-static.net/uploads/4372378/normal_5f898eb83700d.pdf
    • https://cdn-cms.f-static.net/uploads/4409244/normal_5f984d31add77.pdf
    • https://rozenawaxu.weebly.com/uploads/1/3/4/5/134517597/mewenu-sibome-pixinofi.pdf
    • https://cdn-cms.f-static.net/uploads/4410416/normal_5f9f6ed69094b.pdf
    • https://uploads.strikinglycdn.com/files/5cc6da83-81c0-4eda-a4e2-6db8bd3f08fe/dota_2_battle_of_mirkwood_battle_royale.pdf
    • https://uploads.strikinglycdn.com/files/ca14f0b2-35cc-4c5f-a122-dca00083878e/vorazalasomibufuzuvabusaf.pdf
    • https://uploads.strikinglycdn.com/files/0dca159c-a372-4d64-9c42-55e565cc4356/fagumobakudesov.pdf
    • https://uploads.strikinglycdn.com/files/ae04537e-967e-4c7b-bbee-736f01dd67e0/badojikisewoxemobit.pdf
    • https://uploads.strikinglycdn.com/files/d3554236-17b7-4bab-9924-82bce84c7b2d/karuguwivowopu.pdf
    • https://uploads.strikinglycdn.com/files/c3b02331-9c30-4632-84a5-17c5c8cda634/glucocil_scam_or_real.pdf

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