Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6ab9905f8b0c365…

MALICIOUS

PDF

55.4 KB Created: 2021-09-23 18:16:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 74f5574fce8ca6ec005a9a8d6ce7e265 SHA-1: 323fdd4c3c3316934178b5ed0aea960cfbe53ad4 SHA-256: e6ab9905f8b0c36505081cec7eeb70ece5fd45a572fda0dc68d07db7152a358c
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs pointing to disposable domains, a common tactic for phishing or distributing further malware. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' strongly indicates this malicious intent. While no scripts were explicitly extracted, the presence of external URIs and the ML classifier's flagging suggest the PDF is designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5305

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 https://smidgel.ru/uplcv?utm_term=the+notebook+pdf+drive PDF link annotation
    • http://ingore.cn/upload/files/30855463322.pdfIn PDF document text
    • http://pappteam.hu/userfiles/file/tebonedopugofeti.pdfIn PDF document text
    • http://thebankcardservice.com/uploads/files/jogevufuxususigevavomen.pdfIn PDF document text
    • http://hasomedia.com/userfiles/file/bajag.pdfIn PDF document text
    • https://chorland-dining.com/webroot/editor-uploads/files/14368923489.pdfIn PDF document text
    • http://bridgesonthepark.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613c2a915cf9c---zavowuxivojigowomi.pdfIn PDF document text
    • http://architettosirocco.it/userfiles/files/50163671965.pdfIn PDF document text
    • http://partner-support.net/user_data/userfiles/files/wirekagorunifekujolet.pdfIn PDF document text
    • http://amandatravel.com/userfiles/file/bebinizulow.pdfIn PDF document text
    • http://akcjonariusz.com/UserFiles/file/94403646347.pdfIn PDF document text
    • https://alistairmills.com/ckfinder/userfiles/files/31969540056.pdfIn PDF document text
    • http://melly-incendie.fr/img_db/20995420589.pdfIn PDF document text
    • https://nstyapi.com/resimler/files/36696049275.pdfIn PDF document text
    • http://chono.mn/uploads/userfiles/files/61715306735.pdfIn PDF document text
    • http://nicolalazzarotto.com/userfiles/files/jafisis.pdfIn PDF document text
    • http://nachhilfeschule.havonix.com/ckfinder/userfiles/files/nejitinomoxezunuzupolil.pdfIn PDF document text
    • http://liubeauty.com/luutru/files/tuvazajirufid.pdfIn PDF document text
    • http://medica-eg.com/userfiles/file/69483739848.pdfIn PDF document text
    • https://borderpak.com/wp-content/plugins/super-forms/uploads/php/files/54a34b28c9ba3d53026b0ef49063a966/12380343085.pdfIn PDF document text
    • http://asavn.vn/uploads/userfiles/files/limuketewi.pdfIn PDF document text
    • http://studiolauramoschini.it/userfiles/files/42241358578.pdfIn PDF document text
    • https://shastriratanchatterjee.com/ckfinder/userfiles/files/57995252911.pdfIn PDF document text
    • http://secureyun.cn/uploadfile/file///2021090803554778.pdfIn PDF document text