Malicious PDF — malware analysis report

Static analysis result for SHA-256 864a75248d14a95e…

MALICIOUS

PDF

62.7 KB Created: 2021-03-14 19:34:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: b9187c2b4a69821cb9300a955a66a371 SHA-1: e2700610c2c5ec4f8234de8ff8af707db0db9bfb SHA-256: 864a75248d14a95e8c28487f6f15998a255aed423be5d63c8824cfa9038d0cca
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6481

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://golowaki.ru/award?keyword=electrical+manager+job+description+pdf PDF link annotation
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    • https://cdn.sqhk.co/visesefider/0Wkxtja/can_t_find_friends_on_spotify.pdfIn PDF document text
    • https://cdn.sqhk.co/xasakeza/hiQUihg/nhl_trade_news_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/kawonidoza/ThhOOLJ/speedy_cash_advance_reviews.pdfIn PDF document text
    • https://cdn.sqhk.co/kapimetavis/gdiigfh/jifegazenugibamek.pdfIn PDF document text
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    • https://s3.amazonaws.com/fizufapu/xirapizisak.pdfIn PDF document text
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