Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6ed23a679f6e259…

MALICIOUS

PDF

50.6 KB Created: 2021-02-07 21:54:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: f88082713152a0d5528d2416f887b525 SHA-1: b5a5c6cc5793d2e254b97612665772b71e6f680f SHA-256: b6ed23a679f6e2593a7d881554239449780e429dbd92e432391c9e4a626af373
124 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs pointing to disposable domains, a tactic often used for phishing or distributing further malware. The 'PDF_SEO_DISPOSABLE_LINK_FARM' heuristic specifically flags this behavior. ClamAV detection and ML classification further support its malicious nature. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an intent to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7510

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://seumenha.ru/aws?utm_term=information+literacy+pre+test+answers PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4365624/normal_600a473ac2ae9.pdfIn PDF document text
    • https://cdn.sqhk.co/wubukuxivupe/hbAigjc/face_mask_detection_system_research_paper.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421199/normal_5fe73a78ec4d5.pdfIn PDF document text
    • http://jitokinut.iblogger.org/97904178879.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465565/normal_5fd23ebac8902.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369343/normal_5fdd9df090a05.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494661/normal_6017debb23f8d.pdfIn PDF document text
    • http://boviriso.22web.org/86840991850.pdfIn PDF document text
    • https://cdn.sqhk.co/wememiguw/eicvrgi/escape_the_mansion_level_28.pdfIn PDF document text
    • https://cdn.sqhk.co/xoberuweri/hhxEhez/star_traders_frontiers_apk_2._6._21_download.pdfIn PDF document text
    • https://cdn.sqhk.co/fodexuxefeba/9mjcm68/55670928086.pdfIn PDF document text
    • https://cdn.sqhk.co/xipapotug/gmhdoms/parallel_worlds_book.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475016/normal_600c959bb6051.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416319/normal_60202ec34780c.pdfIn PDF document text
    • http://wowulikuvej.rf.gd/enterprise_4_grammar_student_s_book_answers.pdfIn PDF document text
    • http://nakepusigazu.epizy.com/grau_dos_adjetivos_em_ingles.pdfIn PDF document text
    • http://pofabavulaxeli.rf.gd/newsmax_tv_guide.pdfIn PDF document text
    • http://wesovipimamino.epizy.com/39066036421.pdfIn PDF document text
    • http://jiwajazaj.rf.gd/washing_clothes_temperature_guide.pdfIn PDF document text
    • http://lobivovakebala.epizy.com/impossible_quiz_answer_level_43.pdfIn PDF document text

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