Malicious PDF — malware analysis report

Static analysis result for SHA-256 65bdab31d976bcce…

MALICIOUS

PDF

690.9 KB Created: 2021-07-15 19:42:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 4a730bf08a5573b65923e1224ea08cd0 SHA-1: 86ff3f23e544bf9013daeec47ea3c0202a3a8daa SHA-256: 65bdab31d976bcce00205a2d7c208fd473ab752459c18824060ef10fa63b6f4a
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is a PDF that contains multiple links pointing to compromised WordPress sites, likely intended to host and distribute malicious payloads. ClamAV detected this file as a phishing trojan, and the heuristic firings indicate it is a link farm pointing to compromised upload storage. The PDF document body was heavily obfuscated and truncated, preventing a detailed analysis of its specific content or embedded scripts.

Machine Learning

  • Nyx PDF Classifier clean score 0.0280

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://mediabandit.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607251482d7c6---83944015953.pdf In PDF document text
    • http://nnk.gr/wp-content/plugins/formcraft/file-upload/server/content/files/160d19f316c61b---rudazusugupugogibiwu.pdfIn PDF document text
    • https://xn--80aaaglcftt5alesfkk7f.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/67458952f6f0feaff9f72ddce5137350/zipelad.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/Om9ozkHLxGw/uplcv?utm_term=introduction+to+chemical+thermodynamicsPDF link annotation

Open this report in the interactive analyzer, or submit your own file for analysis.