Malicious PDF — malware analysis report

Static analysis result for SHA-256 e4f6e2e0a6acaab3…

MALICIOUS

PDF

55.8 KB Created: 2021-05-10 21:52:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 052ab2edb07ad64c6f79e5f7fa9309a8 SHA-1: 1a9680d3f3f90dddebb62331b2e6be9819359c92 SHA-256: e4f6e2e0a6acaab3ac4c8930f66f4f1dcc76407a23dc0ebe7d449c3268555d88
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external websites, many hosted on compromised WordPress installations, suggesting a link farm or phishing lure. The ClamAV detection and ML classifier strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URIs point towards a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9914

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.gainerwindows.ca/wp-content/plugins/super-forms/uploads/php/files/d3vg81v19uhin7ll4unnnmdkf4/wakadadisekiru.pdf
    • http://eltonltd.ru/sites/default/files/uploads/fefupokarodu.pdf
    • http://www.recetasyconsejos.com/wp-content/plugins/formcraft/file-upload/server/content/files/16096cab5139a5---zupamixigiger.pdf
    • http://www.fliesen-brill.de/wp-content/plugins/formcraft/file-upload/server/content/files/16076ddece25c8---xemitujeboxofolonemusi.pdf
    • http://www.hkqi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608e467b7b316---27223626400.pdf
    • http://www.iso-clean.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160955a419d984---xefatoremelig.pdf
    • http://xn--b1ahhafccpgkb2bxo.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/0fc058a69f0eeb6ab684db5292582412/togiruselax.pdf
    • https://aquariumfargo.com/wp-content/plugins/super-forms/uploads/php/files/b4a8621fa8605097129a65aaf625fdf8/68648162272.pdf
    • http://asbufestival.com/uploads/FCK_files/file/fizazanarifar.pdf
    • https://ludifrance.fr/userfiles/file/lezumi.pdf
    • http://test.uebersetzungen-nesselberger.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607e17eb7d78a---pakuz.pdf
    • https://doellefjelde-mussemarked.dk/images/newsmail/file/nisatufuxifinikidepuxivix.pdf
    • https://www.keystonecare.co.uk/wp-content/plugins/super-forms/uploads/php/files/6c3c6229b14b27146ff5e8d0d0cf739d/99114859513.pdf
    • http://www.bridalchapel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160884a615b831---70593299118.pdf
    • https://tcufroghouses.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085cfdd377be---53147867432.pdf
    • https://afriqueitnews.com/wp-content/plugins/super-forms/uploads/php/files/68acc159220890f2a69119dacaa51158/xulevodekuxepol.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/3CAf4wW3hvY/uplcv?utm_term=unreconciled+vat+transactions+report+sage

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