Malicious PDF — malware analysis report

Static analysis result for SHA-256 17870dd1bf179dbc…

MALICIOUS

PDF

90.2 KB Created: 2021-03-07 09:34:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 8c70d026377fd257bb7dca2e31e616c8 SHA-1: 1c54267b97cf9b7a69d8872091656a4160ce2ea2 SHA-256: 17870dd1bf179dbca1694f8e22a2ada5116b39e0c9211475a30bcf10a94ab3cb
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous external links, many pointing to disposable domains and link farms, indicating a phishing or malware distribution campaign. The presence of ClamAV detection and ML flagging further supports its malicious nature. Although no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8674

Heuristics 5

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://bologen.ru/award?keyword=gloomhaven+scoundrel+guide+imgur PDF link annotation
    • https://cdn.sqhk.co/busibelifiv/jbifwjh/8343842476.pdfIn PDF document text
    • https://cdn.sqhk.co/vagekoxes/giiejmX/43457507443.pdfIn PDF document text
    • https://cdn.sqhk.co/kinanekoxo/b8ihhd2/sotajekowek.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4373505/normal_5ff0043dc721d.pdfIn PDF document text
    • http://sevezor.scienceontheweb.net/life_fitness_x5_elliptical_repair.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459796/normal_5fca5e6686f3f.pdfIn PDF document text
    • https://cdn.sqhk.co/jimumakevaji/giihZgc/animals_names_and_sounds_video.pdfIn PDF document text
    • http://sagedix.medianewsonline.com/18292333686.pdfIn PDF document text
    • http://shoop-fp.ru/20774728039v5d74.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468274/normal_60177a2eabbd7.pdfIn PDF document text
    • https://vominitaxa.weebly.com/uploads/1/3/4/6/134677623/sutewekorogigib.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470964/normal_5fea24fe64a4a.pdfIn PDF document text
    • https://duketexu.weebly.com/uploads/1/3/4/7/134725944/706a3d0.pdfIn PDF document text
    • http://potuxoposutu.medianewsonline.com/4111798318.pdfIn PDF document text
    • https://cdn.sqhk.co/zuvomafoda/Gnia0hd/air_penguin_origin_mod_apk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480744/normal_6013c78c95593.pdfIn PDF document text
    • http://usacreditmonitoring.info/bozuguavfm4.pdfIn PDF document text
    • https://gedimonisesejed.weebly.com/uploads/1/3/1/1/131163996/jufifigidufin_kunufotapafobe.pdfIn PDF document text
    • https://duniterete.weebly.com/uploads/1/3/4/6/134690204/rotaxepepina.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376629/normal_5fec69f790a40.pdfIn PDF document text
    • http://xatovapotogu.mywebcommunity.org/principles_of_electronic_communication_systems_ppt_chapter_7.pdfIn PDF document text
    • http://jisijuvod.myartsonline.com/lowes_troy_bilt_riding_mower_blades.pdfIn PDF document text

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