Malicious PDF — malware analysis report

Static analysis result for SHA-256 f8aeff65770eb4e9…

MALICIOUS

PDF

51.5 KB Created: 2021-07-06 02:18:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: a2324c5bdc2c29e304ff91a5bfeb93da SHA-1: 0e70e7a6b2bc8abef4fcfa03a2c6555e807d1814 SHA-256: f8aeff65770eb4e9a5e7a006477c80e0eecaf0ab6e77553d45e0dfc993746f6b
154 Risk Score

Malware Insights

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

The PDF document contains numerous links, many of which point to compromised CMS upload directories or disposable hosting. This suggests the document is designed to lure users to external sites, likely for phishing or to download further malicious content. The ClamAV detection as 'Pdf.Phishing.Trojan' strongly supports this malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6164

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://paulbwatkinslaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/26460584514.pdf In PDF document text
    • https://www.dekleinewerf.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160c85d76c696d---51682762528.pdfIn PDF document text
    • http://www.theagentpipeline.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bdcb2c88f29---gumijunodusinonuxom.pdfIn PDF document text
    • https://victory-agency.com/wp-content/plugins/formcraft/file-upload/server/content/files/16088976075dfc---73662966422.pdfIn PDF document text
    • http://asesorialuishervas.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608ec6e7ca46d---zadutivepivodisisag.pdfIn PDF document text
    • http://brickchamber.com/ckfinder/userfiles/files/46013466705.pdfIn PDF document text
    • https://www.expoagrogto.com/wp-content/plugins/super-forms/uploads/php/files/av06rv0iva2t2jprt67e30b0f4/58357116225.pdfIn PDF document text
    • https://amblamy.ee/upload/file/18200288207.pdfIn PDF document text
    • https://www.lipfish.no/wp-content/plugins/formcraft/file-upload/server/content/files/1609697f315d5c---gufifosijixigusogopu.pdfIn PDF document text
    • https://www.emmabowman.com/wp-content/plugins/super-forms/uploads/php/files/f19815587652c22666d2f2f4eb42c566/47352229995.pdfIn PDF document text
    • https://patriot.ch/wp-content/plugins/super-forms/uploads/php/files/shbtkf4568j39pb50vsghslhoi/gorosatowutikomen.pdfIn PDF document text
    • http://cn-noah.com/uploadfile/file/34265214986.pdfIn PDF document text
    • https://blueridgelightingandcontrols.com/wp-content/plugins/super-forms/uploads/php/files/ee3d91c01c892ec08344d7a455216276/nezipejuxemifi.pdfIn PDF document text
    • http://www.colegiometa.net/home/wp-content/plugins/formcraft/file-upload/server/content/files/1608d6debd7d86---72035195458.pdfIn PDF document text
    • http://www.fullertherapy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c8cd050328e---42714068726.pdfIn PDF document text
    • http://grani-tonkogo-mira.ru/wp-content/plugins/super-forms/uploads/php/files/c150c9f8538e623206d13461c3c093ad/ragiwedizemidalofu.pdfIn PDF document text
    • http://alvasari.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c88adb92013---tijodona.pdfIn PDF document text
    • https://vieiras.pt/imagensprodutos/file/bonuboguwezabo.pdfIn PDF document text
    • https://indobaliart.com/sitefiles/file/77393267273.pdfIn PDF document text
    • http://accessiblevehicleservices.com/userfiles/file/raraxopifaxule.pdfIn PDF document text
    • http://hatowo.com/app/webroot/uploads/files/8335706327.pdfIn PDF document text
    • http://bioident.pl/photos_fck/file/63357348875.pdfIn PDF document text
    • http://aliancegroup.su/wp-content/plugins/formcraft/file-upload/server/content/files/160706b225dad8---farumapomifife.pdfIn PDF document text
    • http://xperion.hu/wp-content/plugins/super-forms/uploads/php/files/ed378f5b3dba05b75bd61a46da138c98/26219611580.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/Om9ozkHLxGw/uplcv?utm_term=corpus+linguistics+and+discourse+analysisPDF link annotation

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