Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2d3e6dfc644f651…

MALICIOUS

PDF

50.6 KB Created: 2021-02-02 15:55:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 31665cc5c72dc3e5d8840cb827032f72 SHA-1: fd33980ba229a3a0a671c9d926556498c2ea564a SHA-256: f2d3e6dfc644f651c36fd7972ba8e5045ad899230915ff3b36bd372c397db3f9
124 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous external links disguised as educational content, a common tactic for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' suggests a deliberate attempt to create a network of disposable domains for hosting malicious content, likely to evade detection and distribute payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7360

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://leonvi.ru/aws?utm_term=intermediate+french+vocabulary+list+pdf PDF link annotation
    • http://rusherx.studio/zefugobolit3wa8.pdfIn PDF document text
    • http://apple-fruit.space/57073906937h5xhz.pdfIn PDF document text
    • http://hookup753.fun/lifososunidaovosd.pdfIn PDF document text
    • http://nanolenka.xyz/esl_pre-intermediate_grammar_worksheets0ylvz.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368996/normal_5fe35d540390c.pdfIn PDF document text
    • http://hookup158.fun/2416997523jsk9n.pdfIn PDF document text
    • http://technodom11.com/xanathars_guide_to_everything_all_subclassesojl4w.pdfIn PDF document text
    • http://sun-italy.space/wanubirudoponuac43.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410447/normal_5ff7d1bb469fc.pdfIn PDF document text
    • http://vanlit.ru/metodo_del_romboasyi8.pdfIn PDF document text
    • https://cdn.sqhk.co/pifonode/hcshehg/go_viral_meaning_in_chinese.pdfIn PDF document text
    • https://cdn.sqhk.co/lewoxiguj/pnjiihE/10187157479.pdfIn PDF document text
    • http://copriyghtconfirmed.com/wusad70hrb.pdfIn PDF document text
    • http://salopkisa.website/788790734164sqa9.pdfIn PDF document text
    • https://s3.amazonaws.com/jijumupade/suvigelurivimubinuwalopa.pdfIn PDF document text
    • https://s3.amazonaws.com/goneduzum/video_editing_software_for_mobile_free.pdfIn PDF document text
    • https://s3.amazonaws.com/minegikukovel/medication_overuse_headache_patient_information_leaflet.pdfIn PDF document text
    • https://s3.amazonaws.com/tugabijenovili/sheep_heart_dissection_lab_report_discussion.pdfIn PDF document text

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