Malicious PDF — malware analysis report

Static analysis result for SHA-256 d246d16fdf15ba25…

MALICIOUS

PDF

73.2 KB Created: 2021-06-29 00:43:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-17
MD5: b4e56573171f9d0c4b1cc2b3d12f6d98 SHA-1: ed936499074eef695813fc622b1a9017ba872d30 SHA-256: d246d16fdf15ba25754b82531c1aab224c8c7cf75d507c262bbf916cbbe7ec02
124 Risk Score

Malware Insights

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

The file is identified as malicious by ClamAV with a 'Pdf.Phishing.Trojan' signature. Static analysis reveals it functions as a link farm, containing numerous links pointing to potentially compromised WordPress upload directories. The presence of these links suggests an attempt to lure users to malicious content or phishing sites.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4729

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://aeskulap24h.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b6b4a048993---34449551767.pdf In PDF document text
    • http://www.sensible-seeds-premium.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b784d4afbe2---divezi.pdfIn PDF document text
    • http://www.next-conseil.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1608f9e6bd0d6a---kagubuxitone.pdfIn PDF document text
    • https://simovi.mx/wp-content/plugins/formcraft/file-upload/server/content/files/160977ca28f88f---6261480906.pdfIn PDF document text
    • http://ash-graphy.com/userfiles/file/regazabageboliwe.pdfIn PDF document text
    • http://qboardapp.com/wp-content/plugins/super-forms/uploads/php/files/3747783358b6a027cf93fb212c392115/91318526036.pdfIn PDF document text
    • http://fillaracingacademy.cz/ckfinder/userfiles/files/dugamuminelexaluwal.pdfIn PDF document text
    • http://lookupagency.es/wp-content/plugins/formcraft/file-upload/server/content/files/1606cc2dc38948---91288488088.pdfIn PDF document text
    • https://cald-lighting.com/wp-content/plugins/super-forms/uploads/php/files/d5d75df1f245fedf7f3e05c352585d8c/daxodojunemuj.pdfIn PDF document text
    • https://www.truesdalepainting.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aa911ee06cd---pojamirurafigakof.pdfIn PDF document text
    • http://talk200.com/admin/admin/uploadfiles/file/xikekoraduketa.pdfIn PDF document text
    • https://www.gasserbush.com/wp-content/plugins/super-forms/uploads/php/files/0be94cd3a6a87a11028ccd08d27c64a6/numedupuderovabimu.pdfIn PDF document text
    • https://www.physioaktivkramer.de/wp-content/plugins/formcraft/file-upload/server/content/files/160b0fcb030126---66989915307.pdfIn PDF document text
    • http://nuyewpilot.academy/wp-content/plugins/super-forms/uploads/php/files/dda3da1a3bc35922d9095b374aabd2a3/niruzod.pdfIn PDF document text
    • https://lemanssrl.it/file/95319708442.pdfIn PDF document text
    • http://pferdefreunde-brueckenhof.de/sites/default/files/userfiles/file/rekiwulerizubegolasi.pdfIn PDF document text
    • http://redwoodpwr.com/wp-content/plugins/super-forms/uploads/php/files/qp7t2g4n3a03a7jgfvdhm36sp5/44473783132.pdfIn PDF document text
    • http://taxicityplus.ru/userfiles/file/89769607007.pdfIn PDF document text
    • http://webcertain.net/contentupload/fckeditorUploads/organization_/file/vaxinadijexesotokowukafux.pdfIn PDF document text
    • http://diamantina-joaillerie.com/ckfinder/userfiles/files/vavej.pdfIn PDF document text
    • http://atsrealtyvietnam.com/upload/files/65362772352.pdfIn PDF document text
    • http://krukewittfarms.com/userfiles/file/63456756000.pdfIn PDF document text
    • https://big-cash.de/wp-content/plugins/super-forms/uploads/php/files/h6mc3q16lsqu6c5p8qjidoo896/ronalaxe.pdfIn PDF document text
    • http://wksystems.net/HotelEstimator/userfiles/file/bufem.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/fzgW7-mxBc0/uplcv?utm_term=mmpi+2+test+questions+in+orderPDF link annotation

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