Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b837eb9ed550ea8…

MALICIOUS

PDF

42.9 KB Created: 2019-04-04 20:53:38 +03:00 Authoring application: dvipsk 5.58f Copyright 1986, 1994 Radical Eye Software (via Acrobat Distiller 3.0 f r Macintosh)
MD5: 035cb31ac53c73aa8e4261f60b84626f SHA-1: 3026b7bce1cc38e43b710dd21f3ced836c5af527 SHA-256: 6b837eb9ed550ea8adcf7369f160d52c416648148870bc79068411cf4aea79e8
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded external links, as indicated by the PDF_SEO_LINK_FARM heuristic. The ML_NYX_PDF_MALICIOUS heuristic also flagged the document as malicious. The embedded URLs likely serve to direct users to malicious websites or for SEO spamming purposes, which is a common tactic for distributing malware or phishing content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8698

Heuristics 2

  • 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.
  • 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/cosmopolitanism-and-the-media-cartographies-of-change.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/