Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f40c40589a8806c…

MALICIOUS

PDF

42.3 KB Created: 2020-12-17 08:15:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3e395fcf8f225ce72f7898ee9b19196b SHA-1: c6917ba9bc2ec09d97a64996c761875cb6683a72 SHA-256: 0f40c40589a8806cceeced8603f0ee9fc8cec8ec076ff197ad25c9d315dff5f7
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document is identified as malicious by ClamAV and an ML classifier, exhibiting characteristics of a phishing lure. The PDF_IMAGE_LURE heuristic indicates it's an image-only document designed to trick users into clicking an embedded link, likely to a phishing site or for malware download. The presence of numerous external links, including the suspicious URL 'https://trafficel.ru/strik?utm_term=ww1+british+uniform+painting+guide', further supports this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7678

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 42 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://trafficel.ru/strik?utm_term=ww1+british+uniform+painting+guide
    • https://cdn-cms.f-static.net/uploads/4369665/normal_5f9ca800c84b6.pdf
    • https://cdn-cms.f-static.net/uploads/4453720/normal_5fab174cf2269.pdf
    • https://pamuguvijokogag.weebly.com/uploads/1/3/4/8/134883264/545050.pdf
    • https://sivubatololux.weebly.com/uploads/1/3/4/8/134850937/be6f4374e.pdf
    • https://cdn-cms.f-static.net/uploads/4420592/normal_5fbc7c7db7e93.pdf
    • https://uploads.strikinglycdn.com/files/191ecf39-260a-433a-85d0-9e7019bfb1b3/army_sub_hand_receipt_form_2062.pdf
    • https://uploads.strikinglycdn.com/files/ec0d673a-9e0f-45f3-b3ee-091f44fa0e3c/lama_qui_sourit.pdf
    • https://s3.amazonaws.com/vokeri/yahoo_mail_not_working_in_chrome.pdf
    • https://uploads.strikinglycdn.com/files/a0f66d18-813c-4993-a656-637b9478f74e/66_ford_fairlane_gt_hot_wheels.pdf
    • https://uploads.strikinglycdn.com/files/7f28d938-7960-4f63-a58d-91a5e5ff413b/56649647494.pdf
    • https://uploads.strikinglycdn.com/files/bd50393a-5618-4837-a10e-3d320b29876b/1000ml_oz_water_bottle.pdf

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