Malicious PDF — malware analysis report

Static analysis result for SHA-256 a1539522e62ff18e…

MALICIOUS

PDF

50.6 KB Created: 2021-01-05 03:13:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9560cec52b1c18848f4853b29a04086c SHA-1: 5d6e551f0f85c0929b303c4da4b67212470f6786 SHA-256: a1539522e62ff18e462ac21835897867057b06c121402038fa2e2ba6bb883166
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating it is likely a phishing or malware distribution document. The PDF contains a large number of external links, many pointing to other PDFs, suggesting a link farm or redirection mechanism. The primary URL observed is 'https://trafficel.ru/aws?utm_term=grapher+10+software+free', which is likely part of the lure to entice users to click through to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9443

Heuristics 4

  • 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
  • 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/aws?utm_term=grapher+10+software+free
    • https://cdn-cms.f-static.net/uploads/4484624/normal_5fd7ac1bf3c28.pdf
    • https://nidiladidubupa.weebly.com/uploads/1/3/4/7/134753920/rofupukuretaga.pdf
    • https://static.s123-cdn-static.com/uploads/4481411/normal_5fc6b46014619.pdf
    • https://cdn-cms.f-static.net/uploads/4447877/normal_5fd81d27cbf03.pdf
    • https://static.s123-cdn-static.com/uploads/4393361/normal_5feed74173e19.pdf
    • https://cdn-cms.f-static.net/uploads/4407793/normal_5f967a46389ba.pdf
    • https://cdn.sqhk.co/lituxopevuk/OFgfChh/mobile_soccer_2019.pdf
    • https://cdn.sqhk.co/fakosopalo/Mlgfwhd/2020_farm_program_calculator.pdf
    • https://bafizotadax.weebly.com/uploads/1/3/4/7/134761596/79837732.pdf
    • https://cdn-cms.f-static.net/uploads/4366339/normal_5fad62bd412da.pdf
    • https://static.s123-cdn-static.com/uploads/4381101/normal_5fedbc34bf7ae.pdf
    • https://cdn-cms.f-static.net/uploads/4387224/normal_5fab02e0d1726.pdf
    • https://cdn-cms.f-static.net/uploads/4486221/normal_5fd67d786b9d2.pdf
    • https://uploads.strikinglycdn.com/files/5f5dc83e-dcf5-40b9-a1b1-aeae5e7f1c3f/zivodakogenad.pdf
    • https://s3.amazonaws.com/lijopavexanuse/jifejevifojuwosu.pdf

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