Malicious PDF — malware analysis report

Static analysis result for SHA-256 cfe18b59dc8c46d7…

MALICIOUS

PDF

54.0 KB Created: 2021-09-16 08:45:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 29677eea03cbec209d5651e3e7830952 SHA-1: 68f4f13feaa6c5b2c79abe45480679e1669bc452 SHA-256: cfe18b59dc8c46d708ff595cc3e10658cfec651dcb5960750eede1c59c45fbca
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link

The PDF file was detected as malicious by ClamAV and an ML classifier. Heuristics indicate it functions as a link farm, with numerous embedded URLs pointing to potentially malicious or disposable domains. The document body is heavily obfuscated, but the presence of multiple external URIs and the 'PDF_SEO_DISPOSABLE_LINK_FARM' heuristic strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5873

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://festivaldelmaridaje.com/sgi_userfiles/userfiles/files/rabukekenunuperegoregit.pdf In PDF document text
    • https://rmp-traueranzeigen.de/cms/files/sukudipides.pdfIn PDF document text
    • https://www.uflo.edu.ar/ckfinder/archivos/documentos/gujomolixefugefo.pdfIn PDF document text
    • https://www.cocochan.com.pk/wp-content/plugins/super-forms/uploads/php/files/ef0d5e1d7c9b0214e7b971323159fc7e/77581456458.pdfIn PDF document text
    • http://www.espace-hotelier.com/ckfinder/userfiles/files/88662151170.pdfIn PDF document text
    • http://kedehg.com/ckfinder/userfiles/files/72976377198.pdfIn PDF document text
    • http://kbautotech.com/board/datafiles/imagefile/sexipozinexevutewugapam.pdfIn PDF document text
    • http://paglialonga.it/userfiles/files/fozatavonizitujuxev.pdfIn PDF document text
    • http://25630638.kad.tw/kads/ckfinder/userfiles/files/vulanakik.pdfIn PDF document text
    • http://chunmianxian.com/upfolder/e/files/20210916054843.pdfIn PDF document text
    • http://meijialx.com/ckfinder/userfiles/files/88833364722.pdfIn PDF document text
    • http://co-mit.com/uploads/files/wogaxenexabij.pdfIn PDF document text
    • http://nj-rshb.com/v15/Upload/file/20219141224207639.pdfIn PDF document text
    • http://isagenixmakessense.com/ckfinder/userfiles/files/vuvizarurabafukawelev.pdfIn PDF document text
    • http://themadthinker.com/temp/vinney/HTML/userfiles/file/71331378421.pdfIn PDF document text
    • https://himalayanthailand.com/image/upload/File/81620740504.pdfIn PDF document text
    • http://arabic.cz/ckfinder/userfiles/files/79170614500.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/3vuEKuznOb8/uplcv?utm_term=x+plane+9+mod+apkPDF link annotation

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