Malicious PDF — malware analysis report

Static analysis result for SHA-256 9140f930a681cdb7…

MALICIOUS

PDF

49.8 KB Created: 2021-09-26 13:57:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: ef61718fe1f3e77d28b0f86f3e6511d8 SHA-1: 0fbf6d0c939a1f76dc379f955a1c9171c0b00569 SHA-256: 9140f930a681cdb7588fc17a61c75df0d6b702ca4bce897c5bf0033cf70797fb
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous embedded URLs pointing to various domains, suggesting a link farm designed to redirect users. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' specifically flags this behavior, indicating a tactic to obscure the true destination or distribute malicious content. No scripts were extracted, but the PDF structure itself is used to host these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6901

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 http://crestviewshopping.abwingsmd.com/uploads/files/22112369928.pdf In PDF document text
    • https://skatrip.com/basefile/skatripcom/files/68124292814.pdfIn PDF document text
    • http://hajnysport.cz/FCK_userfiles/file/73158413582.pdfIn PDF document text
    • http://dgelc.com/userfiles/file/20210905111342.pdfIn PDF document text
    • http://www.sarajevo-inn-grunewald.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613cf1087bd6f---lovovifinuvafu.pdfIn PDF document text
    • http://kvarkeno56.ru/userfiles/file/wosijogofil.pdfIn PDF document text
    • http://4bx.pl/public/file/pokijiwumirizikoteji.pdfIn PDF document text
    • http://orthodoxvaidikasanghom.org/userfiles/file/8270573120.pdfIn PDF document text
    • http://zbraneklapka.cz/ckfinder/userfiles/files/91641327468.pdfIn PDF document text
    • https://ln80.cn/filespath/files/20210902125215.pdfIn PDF document text
    • https://sipare.com.ar/wp-content/plugins/super-forms/uploads/php/files/u56t7m21es8dv5r5921lumvbal/rilorasarinubinojileveb.pdfIn PDF document text
    • http://dzerzhinsk.timebank.ru/sites/default/files/photos/pagefile/budokaxulu.pdfIn PDF document text
    • http://sgd42.ru/userfiles/file/66026405409.pdfIn PDF document text
    • https://locktactyuma.com/userfiles/file/ridugagidunadabivedilafop.pdfIn PDF document text
    • https://www.moxiclear.com.au/application/third_party/ckfinder/userfiles/files/gidizeturupimu.pdfIn PDF document text
    • https://penzion-palice.cz/content/13564383246.pdfIn PDF document text
    • https://cometgroupinternational.com/ckeditor/ckfinder/userfiles/files/powejo.pdfIn PDF document text
    • http://ekstelekom.com/userfiles/file/59772878649.pdfIn PDF document text
    • http://rebornfair.com/FileData/ckfinder/files/20210901_2DDAD5FF384AC41A.pdfIn PDF document text
    • http://andrenickels.de/ckfinder/userfiles/files/neremapazagozuzezuganuk.pdfIn PDF document text
    • http://alrabbancapital.com/file/files/vojuwadasotitewoga.pdfIn PDF document text
    • https://defi128.phpascal.com/userfiles/files/kikajurukudulomaxojadorad.pdfIn PDF document text
    • https://businessincasey.com.au/application/third_party/ckfinder/userfiles/files/semazigob.pdfIn PDF document text
    • http://yotlist.com/uniformkontakt/userfiles/image/files/34569876035.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/DOqCt-cVA4I/uplcv?utm_term=noise+meter+app+android+freePDF link annotation

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