Malicious PDF — malware analysis report

Static analysis result for SHA-256 f28ef93c9b0b4878…

MALICIOUS

PDF

62.7 KB Created: 2021-03-04 06:40:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 03def19244857c6a8ad7ac339cad1bd0 SHA-1: 4c3e306d64eb417a85d49b66c91bfa1c5b47a51c SHA-256: f28ef93c9b0b4878c4c5de32cf100cf91cfe95c1095107c2d051f642d2383539
124 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs, many pointing to disposable or unknown-reputation domains, suggesting a phishing or malicious redirection attempt. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a deliberate attempt to create a link farm on disposable hosting, further supporting a malicious intent. While no scripts were explicitly extracted, the presence of PDF_URI and ML_NYX_PDF_MALICIOUS firings, along with ClamAV detection, strongly indicates malicious activity, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9590

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://vilenefex.ru/award?keyword=daniel+plan+detox+pdf PDF link annotation
    • https://bozixezexa.weebly.com/uploads/1/3/4/8/134861503/datawik.pdfIn PDF document text
    • http://lezigovedavide.getenjoyment.net/how_to_review_photo_tags_on_facebook_before.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500208/normal_5fca43499b8ff.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403557/normal_601b240ac9ce8.pdfIn PDF document text
    • https://mogasijukunuv.weebly.com/uploads/1/3/4/0/134042787/221913.pdfIn PDF document text
    • http://pomirkapa.site/kuwutoja9m8lz.pdfIn PDF document text
    • https://sogatetemurus.weebly.com/uploads/1/3/4/3/134379625/fa99fcd4b4.pdfIn PDF document text
    • http://jofufunobek.sportsontheweb.net/how_much_does_a_sports_and_entertainment_lawyer_make.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4466398/normal_5ffca7ef31748.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4472206/normal_6023650610682.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4483855/normal_6005b15c3c601.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463272/normal_6011353d81e4a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365576/normal_6007d4445943d.pdfIn PDF document text
    • http://lezeninimi.medianewsonline.com/pugezavepope.pdfIn PDF document text
    • https://zajebujop.weebly.com/uploads/1/3/4/9/134902249/6864448.pdfIn PDF document text
    • http://trikolor.site/article_analysis_example_apa_formatfqmtq.pdfIn PDF document text
    • https://s3.amazonaws.com/lerezazo/electric_circuits_quiz.pdfIn PDF document text
    • http://jabodegodonirad.atwebpages.com/fallout_4_new_vegas_ps4.pdfIn PDF document text
    • https://s3.amazonaws.com/bisegilupuf/call_break_game_apk_free.pdfIn PDF document text
    • https://s3.amazonaws.com/defipedibe/financial_awareness_june_2018.pdfIn PDF document text

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