Malicious PDF — malware analysis report

Static analysis result for SHA-256 db8fe2060f8f2dc4…

MALICIOUS

PDF

35.9 KB Created: 2019-11-02 02:12:50 +03:00 Authoring application: PScript5.dll Version 5.2.2 (via Acrobat Distiller 10.1.4 (Windows))
MD5: 623fd03ef5a0e7335a40c47a5295ea2b SHA-1: ac6e7728e20be8ebfa7a4201879920769704bb60 SHA-256: db8fe2060f8f2dc4785a336a95c16efa284af3a634c7b14607f1d30df06a9aa8
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded links to external PDF files, a technique often used for SEO manipulation or to distribute malicious content. The ML classifier also flagged this PDF as malicious. No scripts were extracted from this sample, and the document body was unreadable, limiting further analysis of the specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8218

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/contemporary-linguistics-6e-study-guide.pdf
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    • http://www.gorillawalker.com/henley-s-twentieth-century-forrmulas-recipes-and-processes-containing-ten.pdf
    • http://www.gorillawalker.com/deceptive-darlings.pdf
    • http://www.gorillawalker.com/economic-crisis-and-political-change-in-north-africa.pdf
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    • http://www.gorillawalker.com/the-secret-history-of-freemasonry-its-origins-and-connection-to.pdf
    • http://www.gorillawalker.com/warwick-the-man-behind-the-wars-of-the-roses-kindle.pdf
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    • http://www.gorillawalker.com/lines-of-fire-a-renegade-writes-on-strategy-intelligence-and.pdf
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    • http://www.gorillawalker.com/the-stephen-king-value-collection-lawnmower-man-gray-matter-and.pdf
    • http://www.gorillawalker.com/thinking-small-pays-big-polymer-nanocomposites-are-becoming-increasingly-popular.pdf
    • http://www.gorillawalker.com/the-cat-who-blew-the-whistle.pdf
    • http://www.gorillawalker.com/by-andy-herbach-eating-drinking-in-spain-portugal-open-road.pdf
    • http://www.gorillawalker.com/the-bantam-medical-dictionary-sixth-edition-updated-and-expanded-
    • 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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