Malicious PDF — malware analysis report

Static analysis result for SHA-256 6dec3ea4268ed482…

MALICIOUS

PDF

105.4 KB Created: 2021-07-26 23:43:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 4293bb8f92ba1129a4e7c5ba42e71be7 SHA-1: 72de7d8a4767a7a1c61ba36f398b333aa3f21e11 SHA-256: 6dec3ea4268ed482e69a4c3eff3df1f493ccacb64a7a7215e38a86ee533ae67e
154 Risk Score

Malware Insights

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

The PDF contains numerous links pointing to compromised WordPress sites, identified by heuristics like 'PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM' and 'PDF_SEO_DISPOSABLE_LINK_FARM'. The ML classifier and ClamAV also flagged this PDF as malicious, specifically as a phishing trojan. The embedded URLs are likely used to redirect users to malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9216

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 https://inchirieriavioane.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1609ecbfa648a6---najen.pdf In PDF document text
    • https://flylights.pl/wp-content/plugins/super-forms/uploads/php/files/pk0gbrrlh5j0teaa3280d71gi3/wetegolefurop.pdfIn PDF document text
    • http://glovimex.com/uploads/ckfinder/files/2140312598.pdfIn PDF document text
    • https://atlastoursntravels.com/userfiles/file/16973789085.pdfIn PDF document text
    • http://gennarimaq.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160ccac5b3cc45---kaxinotugumojikege.pdfIn PDF document text
    • https://home18.ru/wp-content/plugins/super-forms/uploads/php/files/c2916f785d4c3ad3b7aafecdcfc84088/3659017830.pdfIn PDF document text
    • https://rhythmcprandfirstaid.com/wp-content/plugins/super-forms/uploads/php/files/9f8a672f84e4a2aa25c1d35985439fd4/49947517994.pdfIn PDF document text
    • https://www.popcaffe.it/wp-content/plugins/super-forms/uploads/php/files/2bce5c30eaf857f4a0f52f218cc9dc1b/radaso.pdfIn PDF document text
    • http://consol.hu/images/uploadedimages/file/93974814899.pdfIn PDF document text
    • https://www.mercedesbenzofaustinservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608b1d0022255---mofunilu.pdfIn PDF document text
    • https://smarttactic.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160abf40887e5a---gizirapesixepulibagakuxe.pdfIn PDF document text
    • https://bf-pomosch.ru/wp-content/plugins/super-forms/uploads/php/files/ipbjv16lbrf1f8ep6cuhpfn3u5/51092185005.pdfIn PDF document text
    • https://finances-canada.com/wp-content/plugins/super-forms/uploads/php/files/7d0e53fed4e40ba3b64a40c539b6edc2/94369683954.pdfIn PDF document text
    • https://nscs.org/wp-content/plugins/super-forms/uploads/php/files/9c92a7efe2e6ba6409fef97e655f7526/nelasovuke.pdfIn PDF document text
    • https://www.northwoodmedical.ca/wp-content/plugins/super-forms/uploads/php/files/5qdvp3nfl32v0cactu94oc3o09/texakuforuj.pdfIn PDF document text
    • http://absolutelyneon.com/userfiles/file/70669384986.pdfIn PDF document text
    • https://www.crossfitparamaribo.com/wp-content/plugins/formcraft/file-upload/server/content/files/16077fdd690e79---10856371883.pdfIn PDF document text
    • http://www.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1606d7f851ece4---65519600505.pdfIn PDF document text
    • http://www.itbaloch.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070539e8f785---5096945561.pdfIn PDF document text
    • http://reutlinger.pl/userfiles/file/xefoxixokifomofokilusuzu.pdfIn PDF document text
    • http://pvsystexperts.com/wp-content/plugins/super-forms/uploads/php/files/io17sh5a2odh5gu2b5ircjs6v0/39994446991.pdfIn PDF document text
    • https://emmaushuis.org/pages/14868025393.pdfIn PDF document text
    • http://villaturri.it/wp-content/plugins/formcraft/file-upload/server/content/files/16093b536e5aa2---gukomete.pdfIn PDF document text
    • http://stavo-bazar.cz/userfiles/file/nazelexuxakimavezo.pdfIn PDF document text
    • http://multiseal.com.ph/wp-content/plugins/formcraft/file-upload/server/content/files/1607a254c45fee---pulita.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/FevRqgeaUVY/uplcv?utm_term=search+for+truth+bible+study+pdfPDF link annotation

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