Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9bec6f8eed158ee…

MALICIOUS

PDF

54.7 KB Created: 2021-07-31 12:58:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: f560f40ad4f1c12a0e8798b3477801cb SHA-1: 3fd79d2065118dd6f5a9627351583ee114cb3214 SHA-256: c9bec6f8eed158ee4431a0047101be4e31e76bd160d7a9bd170605efede6fb4e
124 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The presence of multiple links pointing to compromised WordPress upload directories suggests a technique to host and distribute malicious content. The PDF likely serves as a lure, potentially for phishing or to download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5090

Heuristics 4

  • 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.
  • 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://gt-outillages.fr/ressource/site-image/files/pesizagonumozigawigaxenok.pdf In PDF document text
    • http://www.ashtralmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b43548a352a---10442875281.pdfIn PDF document text
    • https://www.idahomedia.com/wp-content/plugins/super-forms/uploads/php/files/d5428958b6882f2ec30da9c4038b7c87/tumuw.pdfIn PDF document text
    • https://wentworthre.com/wp-content/plugins/super-forms/uploads/php/files/b84ff08f6aa3b49c83a33935083a9bb4/14671973342.pdfIn PDF document text
    • http://kingsfinancialconsulting.com/userfiles/file/71712454615.pdfIn PDF document text
    • http://sun-tes.ru/files/file/96185613791.pdfIn PDF document text
    • https://inchiriereelicopterromania.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1609edab3f37c7---71240777747.pdfIn PDF document text
    • https://www.burit.net/wp-content/plIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/LPIa9PGmDLg/uplcv?utm_term=the+flu+full+movie+2013+english+free+downloadPDF link annotation

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