Malicious PDF — malware analysis report

Static analysis result for SHA-256 df6837d0a916daa5…

MALICIOUS

PDF

143.0 KB Created: 2021-06-10 03:28:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 2b14d864d5be411dca25e9aa4917827c SHA-1: e360c9db27e14dc7c3844c966a16c2131b60e8e0 SHA-256: df6837d0a916daa5c8e48f785b3c44d54f2829f5205f5e0b9969174651ba57c6
124 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

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 0.9677

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://drafthe.ru/pbw?utm_term=storage+mod+terraria PDF link annotation
    • https://niwejipudid.weebly.com/uploads/1/3/5/3/135383293/318dbac.pdfIn PDF document text
    • https://static.s123-cdn-static-d.com/uploads/4470836/normal_60b751bf19e8c.pdfIn PDF document text
    • https://jitoxegewizo.weebly.com/uploads/1/3/4/4/134460998/giwurufobedu-xojupa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446494/normal_600e695a0c68e.pdfIn PDF document text
    • https://tulaliferejuza.weebly.com/uploads/1/3/0/7/130775137/8630eb1a58a253.pdfIn PDF document text
    • https://lezivefa.weebly.com/uploads/1/3/4/4/134458465/8539778.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4373779/normal_5feb68ed311ba.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483587/normal_60256c47be35c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450428/normal_606ce118afe2c.pdfIn PDF document text
    • https://buromikeraxisam.weebly.com/uploads/1/3/5/3/135323607/lodowanodexijiximif.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408188/normal_5fdccd64012e7.pdfIn PDF document text
    • http://wipadewor.pbworks.com/w/file/fetch/144670389/28649579056.pdfIn PDF document text
    • http://vawaguzidatu.pbworks.com/w/file/fetch/144424212/82006588735.pdfIn PDF document text
    • http://ronojew.pbworks.com/w/file/fetch/145004223/93971089482.pdfIn PDF document text
    • http://podimil.pbworks.com/w/file/fetch/144986049/vovavar.pdfIn PDF document text
    • http://supatibu.pbworks.com/f/justinas_marcinkeviius_mindaugas.pdfIn PDF document text
    • http://pazimonofe.pbworks.com/w/file/fetch/144999948/nubaxawibitesite.pdfIn PDF document text
    • http://kakexigodelo.pbworks.com/f/texivut.pdfIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

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