Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ee2929e1967ff99…

MALICIOUS

PDF

43.1 KB Created: 2018-12-02 11:00:14 +03:00 Authoring application: FrameMaker 7.0 (via Acrobat Distiller 5.0.5 (Windows); modified using iText® 5.5.4 ©2000-2014 iText Group NV (AGPL-version))
MD5: 6474b2840a1c508a69ad88492acbdefc SHA-1: f95cd14e1b78b95bb97259c634fa8d5ad3e6d3f2 SHA-256: 8ee2929e1967ff9934c408de6b276b2a549669462cbed1ebb2b1e7516e745528
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded external links, as indicated by the PDF_SEO_LINK_FARM heuristic. The ML classifier also flagged the document as malicious. The document body, though heavily obfuscated, contains URLs that are part of this link farm. The primary attack pattern appears to be a link farm designed to redirect users to potentially malicious content or to download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8856

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/seismic-data-processing-investigations-in-geophysics-vol-2.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/