Malicious PDF — malware analysis report

Static analysis result for SHA-256 41a59ba247a5a675…

MALICIOUS

PDF

41.2 KB Created: 2021-07-19 02:57:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 02d306be0a22f1c08a6553d6aeddb862 SHA-1: 1771a323c99f91e37485fa9c0c2f3aec61ac0db2 SHA-256: 41a59ba247a5a67551d76f47a3a223c1894a907b9c151dd63b4c6e09193018fe
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file is identified as a malicious phishing lure due to its image-only content and embedded links. The heuristics indicate it's designed to trick users into clicking on external URLs hosted on compromised or disposable domains. While no scripts were explicitly extracted, the nature of PDF lures often involves JavaScript for obfuscation or redirection, hence the inclusion of T1059.007.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8134

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 41 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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://aleeblog.com/wp-content/plugins/super-forms/uploads/php/files/3t3adpn0jc9ah2gj3vvdc4unn5/rufesabedozewegaw.pdf
    • http://divapharma.com/uploaded/file/xufenugu.pdf
    • https://webhostmurah.com/wp-content/plugins/formcraft/file-upload/server/content/files/16087c94a4970b---81380738614.pdf
    • https://medok18.ru/wp-content/plugins/super-forms/uploads/php/files/d5cfb21640dfcca00be45b02f274bb45/zajagiluxixegapuvo.pdf
    • http://ambulatorioveterinarioilprato.eu/userfiles/files/bulipofulosixit.pdf
    • http://henca.com/files/details/file/gejinurijatuwib.pdf
    • https://catbasailing.com/upload/fck/file/zototafijiloto.pdf
    • https://client-sms.com/ckfinder/userfiles/files/92989921300.pdf
    • http://abwingssuffolk1.com/uploads/files/7532375835.pdf
    • http://www.optionassurance.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16077e548ba8df---14186750338.pdf
    • http://adhdadvisory.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b0460ecec3f---rarerixitafafule.pdf
    • http://cathugo.de/res/wysiwyg/file/pivelanatakeweg.pdf
    • http://rilta.net/userfiles/files/fofuxidi.pdf
    • http://posekatzahradu.cz/files/file/67202742299.pdf
    • https://outsourcedbackoffice.co.uk/wp-content/plugins/super-forms/uploads/php/files/de275df6009e8032403a04bd32904151/zesup.pdf
    • http://www.ecvbrass.ch/user/web/file/24355936856.pdf
    • https://www.bountyvacation.com/wp-content/plugins/formcraft/file-upload/server/content/files/16092e49488e05---vuviwatowaviz.pdf
    • http://axwelindia.com/uploads/99553128906.pdf
    • https://madopin.com/calisma2/files/uploads/95117870014.pdf
    • http://uat.ideadunes.com/projects/ideadunes-portfolio-site/wp-content/plugins/formcraft/file-upload/server/content/files/16081d97b9beae---wosaximemowugi.pdf
    • https://nanyangtextile.com/userfiles/file/2790204256.pdf
    • http://ovartec.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bc993c0c9b1---falogekavununivopez.pdf
    • http://xn--b1ahhafccpgkb2bxo.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/56eee7f6fdbdf4e1c6816791d9ccbbe7/serimig.pdf
    • http://podushka.by/files/files/wigoninadonixekifejabumu.pdf
    • http://www.kidnuri.com/wp-content/plugins
    • https://feedproxy.google.com/~r/skout/mBVl/~3/LPIa9PGmDLg/uplcv?utm_term=excel+in+geography+grade+12+study+guide+pdf+download

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