Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ab417e3f6c6e687…

MALICIOUS

PDF

47.7 KB Created: 2021-08-13 22:13:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: 723325a6cd5222c7884ed59acc4e62d8 SHA-1: 9b7f201a6b6596921e756c5f5c97039ce3887471 SHA-256: 5ab417e3f6c6e6879b3c53fb038f85ea1764b0aafe59dc120a2a1c7a136a84c4
94 Risk Score

Malware Insights

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

The sample is identified as malicious by ClamAV and contains multiple links pointing to compromised WordPress sites. These links are likely used to host further malicious content or phishing pages. The PDF document itself does not contain readable text, but the presence of embedded URLs and the ClamAV detection strongly suggest a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4727

Heuristics 4

  • 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.
  • 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://qualitycountscleaning.com/wp-content/plugins/super-forms/uploads/php/files/6e16cc18df6a407b1e61ae94474c6073/tuxululufa.pdf In PDF document text
    • https://masterok-kovka.ru/wp-content/plugins/super-forms/uploads/php/files/649693423f4910d4f551a744de7921ba/19791392806.pdfIn PDF document text
    • https://www.gs-gleichmann.de/wp-content/plugins/formcraft/file-upload/server/content/files/1609afa28c027d---nojikutavip.pdfIn PDF document text
    • http://escolacaritas.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b6278ee7259---65863650960.pdfIn PDF document text
    • http://palletgoanloi.com/img-dn/files/9046336839.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/GLLx1DTH0VQ/uplcv?utm_term=vicks+mini+filter+free+cool+mist+humidifier+cvsPDF link annotation

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