Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb8562f978101a6a…

MALICIOUS

PDF

55.7 KB Created: 2021-09-15 00:48:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 42bc1232698ea4ec7046668b72ef7e78 SHA-1: ff3961ae6bbcce1038f1fa5cfc2eeac36a7b138b SHA-256: bb8562f978101a6aa5f09e65b2dc3989bffc74079744bd7c031e34ac73194a44
124 Risk Score

Malware Insights

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

The PDF document was flagged by ML classifiers and ClamAV as malicious. Heuristics indicate it functions as a link farm, with numerous links pointing to disposable domains. The document body is heavily obfuscated, preventing analysis of its specific content, but the presence of many external links suggests a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5965

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://verner.lt/images/files/20041416812.pdf In PDF document text
    • http://formpart.com/upload/ckfinder/files/51410078936.pdfIn PDF document text
    • https://tasleemdubai.com/userfiles/files/pirujujojubixurar.pdfIn PDF document text
    • https://www.icicle-mountaineering.ltd.uk/ckfinder/userfiles/files/wumufuzo.pdfIn PDF document text
    • http://airsoft1.ro/files/file/2722065883.pdfIn PDF document text
    • http://innova-perila.ru/upload/files/mogusavaguxevepamopuveto.pdfIn PDF document text
    • http://anhuifan.com/upload_fck/file/2021-9-3/20210903152947228908.pdfIn PDF document text
    • http://decaiyun.com/upload/file/210910054525517845ws67d56fsb9p.pdfIn PDF document text
    • https://www.studiorosaliabusco.it/ckfinder/userfiles/files/37261668915.pdfIn PDF document text
    • http://elai.kz/upload/2021/09files/210910011622090197vbubb.pdfIn PDF document text
    • http://nataliashishkina.com/userfiles/file/nukilenimufuwi.pdfIn PDF document text
    • http://smogy.ru/files/files/lubodevufigaterijeluzanu.pdfIn PDF document text
    • http://dentalcenterstudio.it/userfiles/files/73534501326.pdfIn PDF document text
    • http://logo4you.dk/userfiles/file/semiruj.pdfIn PDF document text
    • http://traiteurluc.com/userfiles/file/sozetakokugeripovaw.pdfIn PDF document text
    • https://preprodpcb.com/userfiles/files/58031087028.pdfIn PDF document text
    • http://yevres.fr/ckfinder/userfiles/files/wibofeledajorizumu.pdfIn PDF document text
    • http://cateringkieuan.com/uploads/userfiles/file/wesufikisobukajasitot.pdfIn PDF document text
    • http://www.mostenpo.jp/userfiles/files/josezovumiled.pdfIn PDF document text
    • http://uat.ideadunes.com/projects/ideadunes-portfolio-site/wp-content/plugins/formcraft/file-upload/server/content/files/1612f3aad37516---62168082569.pdfIn PDF document text
    • http://www.radiopopiatej.com/wp-content/plugins/formcraft/file-upload/server/content/files/161348fa1c4e90---69523422192.pdfIn PDF document text
    • https://alpasol.e-giant.net/upload/files/8866412035.pdfIn PDF document text
    • http://goldendazzle.com/upload/quangtri/files/35544145957.pdfIn PDF document text
    • https://hotel-la-licorne.fr/userfiles/file/62194497176.pdfIn PDF document text
    • https://jazykovytabor.topenglish.sk/app/webroot/gallery/files/85339267228.pdfIn PDF document text
    • http://metabolitplus.ru/files/file/befikuligigozifeferidevi.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/Om9ozkHLxGw/uplcv?utm_term=perfect+piano+game+onlinePDF link annotation