Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3d2f1881dadd285…

MALICIOUS

PDF

64.8 KB Created: 2021-05-22 03:28:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: efec26763e89a877f971958b38b62e02 SHA-1: ce9dbd511fe7501170392370c0cda9a6bca53c92 SHA-256: d3d2f1881dadd285b9c7bbdf773034d18761b780971bc84f100667d6a90d7e1d
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, indicating a phishing or trojan threat. It contains numerous links pointing to compromised WordPress sites and disposable hosting, suggesting a link farm designed to redirect users to malicious content. No scripts were extracted, but the PDF structure and URL patterns are indicative of a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9537

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://www.formwork.co.uk/wp-content/plugins/super-forms/uploads/php/files/n9mbtirmsag63obcc51rodjbrd/45128217170.pdf
    • http://www.alexgis.com/siteuploads/editorimg/file/nesifojelutonov.pdf
    • https://howardsteeves.com/wp-content/plugins/super-forms/uploads/php/files/8fe3a1831d19b9f4c40d8a1dd8f27b1d/dipavekasugotagev.pdf
    • http://www.virtualaid.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160711aacace39---tovasukakedisiniw.pdf
    • https://www.limratechnologies.net/wp-content/plugins/formcraft/file-upload/server/content/files/16072159f463ad---7479089903.pdf
    • https://www.alongsideasia.com/wp-content/plugins/super-forms/uploads/php/files/73d5daaf1f469d92db06f723d6c80869/fefafuwajugag.pdf
    • http://www.lauricedale.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16072011e9bbc4---18951652626.pdf
    • https://ambientltg.com/wp-content/plugins/super-forms/uploads/php/files/971fc1afa8d5f71811f9762d02a84c4a/36924392617.pdf
    • http://asesorgubernamental.com/images/file/20330825074.pdf
    • https://forcechicago.com/wp-content/plugins/super-forms/uploads/php/files/b596d8b47e8820f978d7f0e05ac27003/nesosu.pdf
    • https://www.webplease.it/wp-content/plugins/super-forms/uploads/php/files/pu7tf22ibg7nsem7ff9pcbh74t/29813457130.pdf
    • https://socialchangefactory.org/wp-content/plugins/super-forms/uploads/php/files/dbf955cb409593be4c4e0167f7800e73/tenawewaxuxituxemisukon.pdf
    • http://manufim.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/16089919166423---robasobomovotudagasol.pdf
    • https://mziagroup.com/wp-content/plugins/super-forms/uploads/php/files/3c01i4itjutlecid2u1jsa31dq/mufefizebari.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/Om9ozkHLxGw/uplcv?utm_term=nitrado+ark+server+settings+explained+ps4
    • http://kioskcondoweb.wpengine.com/wp-content/plugins/formcraft/file-upload/server/content/files/16089453713a8c---bafiluriborovumigula.pdf

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