Malicious PDF — malware analysis report

Static analysis result for SHA-256 3355bedc7b2dcebc…

MALICIOUS

PDF

64.0 KB Created: 2021-09-05 08:12:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: d8ffa430202b66ba83d86c8b9e4dda5a SHA-1: e7a17687808d79bba32aab4d98e1aa2c1844416a SHA-256: 3355bedc7b2dcebc9c3d96b84cd2e35a71f68949a2bcf6cfcaab002afddb34b2
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. The presence of a link farm pointing to compromised WordPress upload storage suggests an attempt to distribute further malicious content. While no scripts were directly extracted, the PDF structure and heuristic firings indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7249

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://ahha.az/userfiles/file/gigajakijod.pdf In PDF document text
    • http://josephfellerlaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/zemeserofi.pdfIn PDF document text
    • http://fioredda.com/userfiles/files/43361023371.pdfIn PDF document text
    • https://lesartsdansmonjardin.com/userfiles/file/20210727180426.pdfIn PDF document text
    • http://www.onegelha.com/wp-content/plugins/super-forms/uploads/php/files/2434d1dbe110e8d08b94f3f698e0913f/23461633695.pdfIn PDF document text
    • http://www.goataxiservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f243eb7c762---binibapakusaxuxotukikef.pdfIn PDF document text
    • https://www.denisonlandscaping.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a16b6ea46d6---pizurogosofimepevuzizi.pdfIn PDF document text
    • https://seroinstitute.com/wp-content/plugins/super-forms/uploads/php/files/2b9df0ca619b8bbb51a454011bf0c3b8/fisaj.pdfIn PDF document text
    • http://prime-standard.com/piceditor/file/In PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/GLLx1DTH0VQ/uplcv?utm_term=12th+chemistry+book+volume+2+tamil+medium+pdfPDF link annotation

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