Malicious PDF — malware analysis report

Static analysis result for SHA-256 ffe3a3a1b1ecfc5c…

MALICIOUS

PDF

57.5 KB Created: 2021-05-13 16:25:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 60cbe3a6b6479283bead55b8bc308f52 SHA-1: cbee9626fae976e6c381bbb217cffcd00e7f4bfe SHA-256: ffe3a3a1b1ecfc5c7327e0abe6a43d38f695338e6d53f9a3d8f683b798028caf
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains numerous links to external websites, many hosted on compromised WordPress installations, suggesting a link farm or phishing lure. The document body, though heavily obfuscated, appears to reference a 'Dominion tower guide 2018', likely a pretext to direct users to malicious URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7659

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://harpethvalleyhealth.com/wp-content/plugins/super-forms/uploads/php/files/2bf5d1bc7dc575fab9872ee8704bbe72/97803221129.pdf
    • https://cspdental.com/wp-content/plugins/super-forms/uploads/php/files/623f09b2952bf1ff89858f02ac6a8759/zonanezotupoziluperuwo.pdf
    • http://www.sunarozlem.com.tr/wp-content/plugins/super-forms/uploads/php/files/in51ot734e895vfas085u6ukj6/99738980638.pdf
    • http://mulroyenvironmental.ie/userfiles/file/mulofokopovamufagidaxu.pdf
    • https://www.sahabatkeluargahomecare.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608dd026837e7---mebudozarumepofetes.pdf
    • http://curry-box-deluxe.de/userfiles/file/71252147558.pdf
    • https://www.verpoort-bouw.be/wp-content/plugins/formcraft/file-upload/server/content/files/160956bc1ca7a8---13634756298.pdf
    • https://empylean.com/wp-content/plugins/super-forms/uploads/php/files/f3q64q3l7k2i727v1l6qgov819/8436994405.pdf
    • http://beytarimcilik.com/admin/editor_resim/file/83081916185.pdf
    • https://forex-robo.org/wp-content/plugins/super-forms/uploads/php/files/980dab8206637a5a9f12e67b79f58845/damebuwar.pdf
    • http://www.trimbleexpress.sk/wp-content/plugins/formcraft/file-upload/server/content/files/1607777c2ccbac---12175271531.pdf
    • https://amezdigital.com/wp-content/plugins/super-forms/uploads/php/files/8dbb1490d80f6019497ea48fc1be1603/junezuxagogizupawo.pdf
    • https://www.tai.gr/wp-content/plugins/formcraft/file-upload/server/content/files/1607ec37166176---bolisibi.pdf
    • http://www.guaitoli.eng.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607d0b80cac57---fimonupivixeziduxikorid.pdf
    • http://aire-limpio.com/img/editor/file/30989921113.pdf
    • https://www.bouwenaaneensterkwerkgeversmerk.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1607547559923a---ritexavero.pdf
    • http://www.pirac.org/wp-content/plugins/super-forms/uploads/php/files/6cbc89f8a0bdca9f831053c670ab815e/26943282139.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/3vuEKuznOb8/uplcv?utm_term=dominion+tower+guide+2018

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