Malicious PDF — malware analysis report

Static analysis result for SHA-256 21006e5575be3c6d…

MALICIOUS

PDF

58.4 KB Created: 2020-11-25 08:33:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f73cda1d9944f179e252ecc3cebef7ca SHA-1: 26bfb671c5014f3e5379e1fbc717e48b39a52d17 SHA-256: 21006e5575be3c6de36182a46afd013a11ba3c595f84ee03c4411cda0fb3709d
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://gettraff.ru/aws?utm_term=the+boogeyman+song'. Additionally, a machine learning classifier and ClamAV also flagged the file as malicious. The document body, though heavily obfuscated, contains metadata suggesting it was generated by wkhtmltopdf, a tool sometimes used to create malicious PDFs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9332

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://gettraff.ru/aws?utm_term=the+boogeyman+song
    • https://cdn-cms.f-static.net/uploads/4386605/normal_5f9626219f648.pdf
    • https://cdn-cms.f-static.net/uploads/4374686/normal_5f8b15e2ded59.pdf
    • https://cdn-cms.f-static.net/uploads/4411717/normal_5faf09f502381.pdf
    • https://cdn-cms.f-static.net/uploads/4369161/normal_5f8c0dc449362.pdf
    • https://cdn-cms.f-static.net/uploads/4420748/normal_5fa210d036fea.pdf
    • https://cdn-cms.f-static.net/uploads/4366047/normal_5f87e08f6576a.pdf
    • https://cdn-cms.f-static.net/uploads/4486975/normal_5fbac9672824c.pdf
    • https://cdn-cms.f-static.net/uploads/4409409/normal_5f96452ad0fd9.pdf
    • https://uploads.strikinglycdn.com/files/add4e931-0b22-4af3-bfca-894f32bde179/modern_physical_organic_chemistry.pdf
    • https://s3.amazonaws.com/rejiner/gezopimas.pdf
    • https://s3.amazonaws.com/zerepuzuze/island_of_hope_island_of_tears_worksheet.pdf
    • https://s3.amazonaws.com/paropabaru/toxuxagukifepezabeb.pdf
    • https://uploads.strikinglycdn.com/files/086efe4e-bdab-4054-914c-2356c81a5ed0/favofegisigopubabitu.pdf
    • https://s3.amazonaws.com/bejexe/14418041590.pdf

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