Malicious PDF — malware analysis report

Static analysis result for SHA-256 b371ab4a34ef78ec…

MALICIOUS

PDF

57.2 KB Created: 2021-05-16 21:45:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 79601a0fe80e4f7c3cc978d6f0f60318 SHA-1: f6d33a8b30dedcf908772c48e0fdde52c7eb2b7a SHA-256: b371ab4a34ef78ecc15ec933e27431e0c1fad739c3669297ceaed2a3688e4548
154 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier. It functions as a link farm, containing numerous URLs pointing to compromised WordPress sites. These links are likely intended to lure users to phishing pages or download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9706

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://oniceh.ru/uplcv?utm_term=google+classroom+training+pdf
    • http://pcmcpropertyblog.com/wp-content/plugins/super-forms/uploads/php/files/10d84b8f6a613f3b9491e33c84aa1787/kibutoporuborexegi.pdf
    • https://www.travelticket.com.au/wp-content/plugins/super-forms/uploads/php/files/uhgk6l2u7l8dssjfnfbo72vp0c/52000506363.pdf
    • http://kindervakantieweekdeurne.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160911b4077afe---xavaronaku.pdf
    • https://www.ideakliniksisli.com/wp-content/plugins/formcraft/file-upload/server/content/files/16092740b8b982---70327841536.pdf
    • http://www.caribbeandentist.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609f91b79c1c8---ridulizatax.pdf
    • https://burmesecatclub.nz/wp-content/plugins/super-forms/uploads/php/files/a46c4c14cc9b77565b7efa91ab3df75f/73922372063.pdf
    • https://www.zulilighting.com/wp-content/plugins/super-forms/uploads/php/files/ab0dd50c041999f28c047a05d4476c0a/fovufuxefijirugimav.pdf
    • https://www.karenlovelee.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607648722f249---nogotibojigalu.pdf
    • https://unitedcardsolutions.com/wp-content/plugins/formcraft/file-upload/server/content/files/16073adee8da65---dixiwewivedofe.pdf
    • https://halobysciton.com/wp-content/plugins/formcraft/file-upload/server/content/files/16082e9f6991da---43714163761.pdf
    • https://northstarexecutivesearch.com/wp-content/plugins/super-forms/uploads/php/files/9b5283333c6d1bdf83a31f9a7e45a23f/97547552028.pdf
    • http://www.hollyskauaicondo.com/wp-content/plugins/formcraft/file-upload/server/content/files/16099580c8f9d8---66081005951.pdf
    • https://northstarexecutivesearch.com/wp-content/plugins/super-forms/uploads/php/files/3d59b59befdf364da946776ec10e0842/61453345123.pdf

Open this report in the interactive analyzer, or submit your own file for analysis.