Malicious PDF — malware analysis report

Static analysis result for SHA-256 7925e080932b8a54…

MALICIOUS

PDF

60.4 KB Created: 2021-08-07 09:46:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 65994dd2c2e3ee0512b83d205826add4 SHA-1: 25452905c0310d289379f32e58e31ba5d9494fc5 SHA-256: 7925e080932b8a54166e387baea83fc297145707fcbd9253854c0e74687bf33a
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains numerous embedded URLs, many of which point to compromised WordPress sites or disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to redirect users to phishing or malware distribution sites. The primary attack pattern observed is the use of a link farm within a PDF to lure victims to external resources.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9776

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
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://www.lugashotel.com/data/editorfile/93826689887.pdf In PDF document text
    • https://www.emmabowman.com/wp-content/plugins/super-forms/uploads/php/files/149463cf78a799ad6deeba5ab60c5914/ravajijakafamer.pdfIn PDF document text
    • https://phuketwebstudio.com/ckfinder/userfiles/files/xarenaxigedinirigilujoban.pdfIn PDF document text
    • https://zenit-npk.ru/files/file/radawobojuvuguxaxe.pdfIn PDF document text
    • http://for-rent-aalst.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f1ae6cd975---gekolatoluderumeponirive.pdfIn PDF document text
    • http://cartopack.be/Images/file/25898992196.pdfIn PDF document text
    • http://www.uvhk.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607dd05ece0dd---98773447968.pdfIn PDF document text
    • https://uppersanduskyrotary.com/cms/files/File/vitiwitavitisupazufuxugu.pdfIn PDF document text
    • http://moveisgarciadigital.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1606fc26727890---9007492054.pdfIn PDF document text
    • http://www.ktgroup.co.uk/ckfinder/userfiles/files/kusajomoxe.pdfIn PDF document text
    • http://teresachild.com/upload/files/wemiwuwoga.pdfIn PDF document text
    • https://rent-1.es/ckfinder/userfiles/files/64925509403.pdfIn PDF document text
    • http://alexandraharris.com/clients/36054/File/31580049038.pdfIn PDF document text
    • https://medicinasolidale.org/wp-content/plugins/super-forms/uploads/php/files/444a054334180017fb2d2fc446407f42/15808769159.pdfIn PDF document text
    • http://accessiblevehicleservices.com/userfiles/file/20439769180.pdfIn PDF document text
    • http://bfr-bialapodlaska.pl/userfiles/file/bogolorewiruxigi.pdfIn PDF document text
    • http://www.scmphotography.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1610c7cb4b619f---68397424347.pdfIn PDF document text
    • http://dpholding.ru/uploads/files/60391248528.pdfIn PDF document text
    • https://www.reparaciondebomba.com.ar/wp-content/plugins/super-forms/uploads/php/files/lummoq4q9pv954qbtu2hj9rda1/91468820838.pdfIn PDF document text
    • https://www.kiteschule-eckernfoerde.de/wp-content/plugins/formcraft/file-upload/server/content/files/16077ad07d1f50---natimotivoke.pdfIn PDF document text
    • https://daluxerealty.com/wp-content/plugins/super-forms/uploads/php/files/bsctcc96hh8osop05scf4p6n70/40616444500.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/LPIa9PGmDLg/uplcv?utm_term=how+to+factory+reset+brother+mfc+l2700dwPDF link annotation

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