Malicious PDF — malware analysis report

Static analysis result for SHA-256 2bf3782163199150…

MALICIOUS

PDF

45.0 KB Created: 2021-07-19 02:57:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: bd6b7ca01302b5fed9c5a452d7d012c2 SHA-1: efc8a954f70effaafb30238f1dbccdbffdfaf16d SHA-256: 2bf37821631991505ed64bcdb19051bc20736962bc7350e9eba3eb8edc66a50a
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF employs an image-only lure, a common tactic for phishing or malware delivery. It contains numerous links pointing to compromised WordPress sites, suggesting an attempt to host malicious content or redirect users to phishing pages. The ClamAV detection and ML classifier further support its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5654

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 44 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/formcraft/file-upload/server/content/files/1607dfb7d11244---kulewojaxedot.pdf
    • http://www.kocay.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/16087825c1f48d---3494734663.pdf
    • 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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