Malicious PDF — malware analysis report

Static analysis result for SHA-256 66f6360437db6cad…

MALICIOUS

PDF

49.6 KB Created: 2020-12-26 23:13:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f2bcf1d8f575b0792c0fa10cc0635898 SHA-1: 560f33c724b58b361299d5366e03b36ecc1d4d82 SHA-256: 66f6360437db6cade859b7e3dbf52873ef662dd658206c15af4da5730eaeee6d
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link

This PDF document is identified as malicious by ClamAV and an ML classifier. It functions as a screenshot lure, presenting an image to the user while hiding a clickable link. The primary malicious URL identified is trafffe.ru, which likely leads to a phishing page. The document contains numerous other PDF links, suggesting a link farm or redirection strategy.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9443

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 49 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=estereotipos+de+genero+definicion+pdf
    • https://cdn-cms.f-static.net/uploads/4382197/normal_5f8c4a8bbcf34.pdf
    • https://lafitezin.weebly.com/uploads/1/3/5/3/135323108/sawotofi.pdf
    • https://cdn-cms.f-static.net/uploads/4475564/normal_5faad7231f831.pdf
    • https://cdn-cms.f-static.net/uploads/4413019/normal_5faf653c67831.pdf
    • https://cdn-cms.f-static.net/uploads/4408004/normal_5fa0828d03f83.pdf
    • https://cdn-cms.f-static.net/uploads/4385633/normal_5faf08664519a.pdf
    • https://uploads.strikinglycdn.com/files/9f396722-25a9-48be-b324-d85f71f871cc/death_orb_dead_cells.pdf
    • https://uploads.strikinglycdn.com/files/8fb1fd9a-6da1-49b4-8fb1-5c5b242111f2/yumi_ishiyama_fanart.pdf
    • https://uploads.strikinglycdn.com/files/f4269950-8a81-4698-ae7a-f55c58b5cfc7/35954099137.pdf
    • https://uploads.strikinglycdn.com/files/17db16e8-2716-4c3b-9f7d-2d25f56b0371/vijito.pdf
    • https://uploads.strikinglycdn.com/files/6085bbe6-924e-45ac-ad11-b1b0e588b36c/83311871149.pdf
    • https://uploads.strikinglycdn.com/files/cc1191df-96c4-4cdd-8295-eef0f5ad40d4/58637233035.pdf
    • https://uploads.strikinglycdn.com/files/7ef56951-6eb5-476f-83de-e4082b3a1f1a/long_john_silvers_nutrition_information.pdf
    • https://uploads.strikinglycdn.com/files/b019abb8-9535-4268-bae5-644ef7c5cff3/my_name_essay.pdf
    • https://uploads.strikinglycdn.com/files/1cd4fa66-2089-44a2-a140-eace8da14db4/39813983406.pdf

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