Malicious PDF — malware analysis report

Static analysis result for SHA-256 4724c9f22196d8cc…

MALICIOUS

PDF

54.5 KB Created: 2021-05-14 14:18:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5e3cc17204ddd96a7b9c7ab6dd303fad SHA-1: 9ecf7463cc601c3b25ae9d4eee1a46b8662e0936 SHA-256: 4724c9f22196d8cc14b9e1dc00787f1cc7eec3d2d2327bf024cfdc2aaa8531b7
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document is classified as malicious by ML and ClamAV, indicating it is likely a phishing or trojan delivery mechanism. The document contains numerous links to external websites, many hosted on compromised WordPress installations, suggesting a link farm or redirection strategy to distribute malicious content. The presence of PDF_SEO_DISPOSABLE_LINK_FARM heuristic further supports this, indicating a tactic to manipulate search results or distribute content via disposable hosting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8848

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://www.iycadana.org/wp-content/plugins/super-forms/uploads/php/files/v1kad706ceuj9sf95th6560mi3/21256904439.pdf
    • https://senzedigicraft.com/wp-content/plugins/super-forms/uploads/php/files/21bcb0dd0631bb3788163d15c8feff5f/vapib.pdf
    • https://aguiapromocional.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16071ec6d04bee---sazorolejam.pdf
    • https://www.sharpeningfactory.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608e5d29c95fe---84329818649.pdf
    • https://www.booster-p.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072aba28a6c6---bobagipovazulimemuxori.pdf
    • https://allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/5e5546139c8358dd741a62f2fb7afa33/73222562774.pdf
    • https://www.phoenixdentalacademy.co.uk/wp-content/plugins/super-forms/uploads/php/files/9d61712884afe20ff5525296bbfc7587/99053115521.pdf
    • http://www.caslyn.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1607fd562b26b6---zotetonigakelam.pdf
    • http://erbilsunhotel.com/wp-content/plugins/super-forms/uploads/php/files/4hctgbco36k3ov49fr9ios2206/rudagijawotawomaxoz.pdf
    • https://patriot.ch/wp-content/plugins/super-forms/uploads/php/files/tu58pu17041q67mf1a64tcfjko/wafolofobevelesiwiwakino.pdf
    • https://www.scilights.com/wp-content/plugins/super-forms/uploads/php/files/df01a3bfe7c719a707f2307ebe039c0e/56387446728.pdf
    • https://michaels-limo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b88f66a5cf---19207111148.pdf
    • https://forumhotel.by/wp-content/plugins/super-forms/uploads/php/files/7u6btbb6umpa395tasv9ibbmk0/dorogufanegetasixu.pdf
    • http://aiswaryamatrimonials.com/fck_uploads/file/gikidokegixo.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/3CAf4wW3hvY/uplcv?utm_term=a+guide+to+crimping+rj45+connectors

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