Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c3408468965d472…

MALICIOUS

PDF

50.6 KB Created: 2021-02-06 19:30:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 977e850f64c2dbbdc2744b4630005d5c SHA-1: 739d6353cbd67f581d62cc0d03a050029fac430c SHA-256: 4c3408468965d47291c01f2d1915498ce2bf8f7a7a6d66a244abb392000f541b
124 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous external links, with a high heuristic indicating it's a link farm on disposable hosting. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution via the linked content. The document body is heavily obfuscated and unreadable, providing no direct clues to its purpose.

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://seumenha.ru/aws?utm_term=design+sponge+boston+guide PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4487888/normal_5fec12c5ed45d.pdfIn PDF document text
    • http://shoop-fl.ru/ldpe_bags_manufacturing_project_report2lbv3.pdfIn PDF document text
    • http://5gusevshop.space/67067263255odnm3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4428054/normal_5fdfab21a121c.pdfIn PDF document text
    • http://afracheat8.xyz/2357400899miqu5.pdfIn PDF document text
    • http://kpovli.ru/6022827430783vh4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422163/normal_601caa0d6310d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486521/normal_6014d05bac82d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450257/normal_600fb7bdef4fd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489601/normal_5fe38ed457a64.pdfIn PDF document text
    • https://wixinuwexe.weebly.com/uploads/1/3/0/7/130739185/jewizuwerimufi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4483361/normal_5ffe6c3d47c35.pdfIn PDF document text
    • http://natgood.space/shot_clock_meaning_urbanyxadt.pdfIn PDF document text
    • https://s3.amazonaws.com/fibesezati/javascript_blob_zip.pdfIn PDF document text
    • https://s3.amazonaws.com/nosepevozux/pezadidorapeti.pdfIn PDF document text
    • https://s3.amazonaws.com/zomuzigo/71109017028.pdfIn PDF document text
    • https://s3.amazonaws.com/towakog/in_formal_letter_cc.pdfIn PDF document text
    • https://s3.amazonaws.com/tolivajupeku/98556257439.pdfIn PDF document text

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