Malicious PDF — malware analysis report

Static analysis result for SHA-256 5fa426ecf3928273…

MALICIOUS

PDF

83.1 KB Created: 2021-05-21 06:33:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: dfc79f8949d235437e86de54aaf21705 SHA-1: 995a8866f6b192c2f2973138d9fe517cd3dfcf78 SHA-256: 5fa426ecf39282734e37f56bb1116907756704181888670d7bf6abe1f555d330
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. The embedded URLs and the document body suggest a phishing lure, directing users to compromised websites. The presence of external URIs and compromised CMS upload links indicates an attempt to host and distribute malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7072

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 https://catamma.ru/uplcv?utm_term=how+do+you+derive+the+volume+of+a+sphere PDF link annotation
    • http://www.victorian-manor.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16083d84196565---99362810097.pdfIn PDF document text
    • http://www.onegelha.com/wp-content/plugins/super-forms/uploads/php/files/ecd17c29706630a43e04c098e5520c88/gelatiwopubofagesevuj.pdfIn PDF document text
    • http://www.molinoag.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606fc23c10199---matejemamegawupob.pdfIn PDF document text
    • http://anatolianlgs.com/userfiles/file/62931591552.pdfIn PDF document text
    • https://www.sgestrecho.es/wp-content/plugins/formcraft/file-upload/server/content/files/160a4f7387d548---48519751994.pdfIn PDF document text
    • https://www.fecomerciomg.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/160716f46550fb---miraderobit.pdfIn PDF document text

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