Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5738f80fb921e01…

MALICIOUS

PDF

58.6 KB Created: 2021-02-27 07:00:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 81db9b98c3371ea49dcf67101480fb02 SHA-1: 32f7be0391752f5e560db7d0a0b68247aca63d87 SHA-256: f5738f80fb921e013e3d6ace4275d6fd233141604cc856f2aa5e5320c1a4dba8
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a large number of external links, identified as a link farm, with the primary goal of directing users to potentially malicious websites. The ClamAV detection and ML classifier further support its malicious nature. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to exploit users through deceptive content, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6847

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://seumenha.ru/aws?utm_term=beethoven+piano+sonata+in+f+minor+op+2+no+1
    • https://cdn-cms.f-static.net/uploads/4485569/normal_601404ddbc26a.pdf
    • https://jiromozuno.weebly.com/uploads/1/3/5/3/135387519/1354374.pdf
    • https://nofixemi.weebly.com/uploads/1/3/6/0/136082439/664748.pdf
    • https://metonokosaza.weebly.com/uploads/1/3/2/6/132681587/makasetuv.pdf
    • https://dowusasetitemej.weebly.com/uploads/1/3/4/3/134307927/4243303.pdf
    • https://finamiwowekizo.weebly.com/uploads/1/3/2/3/132302732/fupuvoge.pdf
    • http://vijufik.iblogger.org/game_bulldozer_game.pdf
    • https://mozufidapu.weebly.com/uploads/1/3/4/0/134012608/duxop.pdf
    • https://xoxulesajoxe.weebly.com/uploads/1/3/1/4/131438427/marederofogiju_dunegizejo_libobezus.pdf
    • http://pejofewetoz.22web.org/15774170154.pdf
    • https://girawosanisab.weebly.com/uploads/1/3/0/7/130740609/86593cf1fb734.pdf
    • https://s3.amazonaws.com/xisakazelelinim/niwofofofa.pdf
    • https://s3.amazonaws.com/nisoxow/tyvek_groundsheet_nz.pdf
    • https://s3.amazonaws.com/nijudow/lose_yourself_instrumental.pdf
    • https://s3.amazonaws.com/resabomibogodaw/tamil_jumbled_words_puzzle_whatsapp_answers.pdf

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