Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e33ddb193ecaab3…

MALICIOUS

PDF

31.8 KB Created: 2019-12-09 16:54:09 +03:00 Authoring application: PDFCreator Version 1.5.1 (via GPL Ghostscript 9.05)
MD5: ebe82443e63b7ac354c545efa7219aa5 SHA-1: b4ef8ba5fa9f7f9167b51a696df7461f978e22de SHA-256: 7e33ddb193ecaab36c1b7e50143753a8309912e17af41d96cda924c645d20999
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs, identified as a link farm, which is a common tactic for SEO manipulation or distributing malicious content. The heuristic 'PDF_SEO_LINK_FARM' strongly indicates this malicious intent. While no scripts were extracted, the sheer volume of links suggests a coordinated effort to direct users to external resources, potentially for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7735

Heuristics 3

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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 http://www.gorillawalker.com/zen-direct-pointing-to-reality-art-imagination.pdf
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    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://www.aiim.org/pdfa/ns/extension/
    • http://www.aiim.org/pdfa/ns/schema#
    • http://www.aiim.org/pdfa/ns/property#
    • http://www.aiim.org/pdfa/ns/id/

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