Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f3f76f29145d10a…

MALICIOUS

PDF

56.6 KB Created: 2021-02-06 07:05:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: b3cc92841d48c34dedee7cc47f6ae9af SHA-1: 269d12a33a2be24546478ee900dfa05366d7719c SHA-256: 5f3f76f29145d10a37d876b29b0293a6e30fba63580008e403c8d57468a7d6d8
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains multiple external URIs and is identified as a link farm on disposable hosting, suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing lures for software trials. No scripts were extracted, but the PDF structure and embedded links point towards a malicious document designed to redirect users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7545

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jottigo.ru/wb?keyword=adobe%20pdf%20editor%20free%20trial PDF link annotation
    • https://ketevifut.weebly.com/uploads/1/3/1/4/131453005/286387.pdfIn PDF document text
    • http://italy50wow.pro/witcher_triss_nudecl778.pdfIn PDF document text
    • https://kitigenuripoduj.weebly.com/uploads/1/3/1/0/131070171/wuvove-rabukovu-kupobugekimanof-sadize.pdfIn PDF document text
    • https://metidelesaweso.weebly.com/uploads/1/3/0/8/130813592/8e582.pdfIn PDF document text
    • https://widijozitumude.weebly.com/uploads/1/3/4/6/134688085/dd51c6d632c200e.pdfIn PDF document text
    • http://hq-cleartv.info/situational_analysis_in_education7nmq5.pdfIn PDF document text
    • http://klosheff.xyz/emmanuel_amos_enidoim1.pdfIn PDF document text
    • https://vomediwanuxorat.weebly.com/uploads/1/3/4/3/134327005/rawejotogas.pdfIn PDF document text
    • http://bestrongbyg.com/zidotesqz0.pdfIn PDF document text
    • http://lnstagram-helping-centre.com/97196022501npnzb.pdfIn PDF document text
    • https://saboruxeketeg.weebly.com/uploads/1/3/4/8/134850947/8479667b787ae.pdfIn PDF document text
    • https://natatujefeni.weebly.com/uploads/1/3/1/6/131607075/2802930.pdfIn PDF document text
    • http://grafoanaliz.ru/interrogative_sentence_examples_with_answersh9dtl.pdfIn PDF document text
    • http://valamujunitun.epizy.com/dabipimizisux.pdfIn PDF document text
    • http://lojifasipok.rf.gd/abc_sports_reporter_female.pdfIn PDF document text
    • http://savejanaxejov.rf.gd/journal_of_bioscience_and_bioengineering_author_guidelines.pdfIn PDF document text
    • http://banitazivi.epizy.com/template_undangan_khitanan_cdr.pdfIn PDF document text

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