Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c6a03d7a35e574d…

MALICIOUS

PDF

37.3 KB Created: 2021-06-14 04:37:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: 931c4eb814b43629c27483d7da568dba SHA-1: c5cc35466833a29e0da43cce9ba1aa45c57bb8c0 SHA-256: 8c6a03d7a35e574d9dec0ddd393bce591d440d8fafcd73bfae17756e7f89f753
144 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF is identified as malicious by ClamAV and ML classifiers, exhibiting characteristics of a phishing lure. It contains an embedded link to 'https://cructi.ru/uplcv?utm_term=among+us+apk+11.17', which likely serves as a redirect to a malicious payload or phishing page. The document's structure and the presence of multiple links to compromised WordPress sites suggest an attempt to distribute malware or steal user information.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5922

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
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 37 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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://cructi.ru/uplcv?utm_term=among+us+apk+11.17 PDF link annotation
    • https://sportli.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/160a252c7e1a17---17191797186.pdfIn PDF document text
    • https://cafe-malaysia.com/contents/file/26448646083.pdfIn PDF document text
    • https://loan-financial.com/wp-content/plugins/super-forms/uploads/php/files/b070f738c6533b7b83707ee3d6eb8fb9/20303881154.pdfIn PDF document text
    • https://halobysciton.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c67bedf099f---winixowonalugag.pdfIn PDF document text
    • http://www.canadavisaservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ac799661ffe---42153124617.pdfIn PDF document text
    • https://fjordancv.info/wp-content/plugins/super-forms/uploads/php/files/c2b9cdcdd2e15d90cb103427df505a94/rolukafelotejadufinivud.pdfIn PDF document text
    • http://videoacceso.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c6739ae0bc3---29053601749.pdfIn PDF document text

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