Malicious PDF — malware analysis report

Static analysis result for SHA-256 cbe87fe2cc2b5777…

MALICIOUS

PDF

47.0 KB Created: 2018-11-14 08:43:11 +03:00 Authoring application: Adobe InDesign CC 2014 (Macintosh) (via Adobe PDF Library 11.0)
MD5: 584117e83b5c914d094be5cf8d8db2ec SHA-1: 62814bd292712358a15edb8ff8f0d0be399cc72d SHA-256: cbe87fe2cc2b5777c0acdd9459cc2b09d7fe3db936560ca4d762927874885856
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment

The PDF contains a large number of embedded links to external PDF files, primarily hosted on www.gorillawalker.com. This technique is often used to create link farms for SEO manipulation or to distribute malicious content indirectly. The ML classifier also flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8518

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/a-guide-to-successful-consulting.pdf
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    • http://www.gorillawalker.com/international-communications-history-conflict-and-control-of-the-global-metropolis.pdf
    • http://www.gorillawalker.com/foundations-of-international-migration-law.pdf
    • http://www.gorillawalker.com/caribbeing-comparing-caribbean-literatures-and-cultures-textxet-studies-in-comparative.pdf
    • http://www.gorillawalker.com/hurricane-higgins-snooker-scrapbook.pdf
    • http://www.gorillawalker.com/the-sunday-philosophy-club-an-isabel-dalhousie-novel-1.pdf
    • http://www.gorillawalker.com/nature-anatomy-the-curious-parts-and-pieces-of-the-natural.pdf
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    • http://www.gorillawalker.com/stitching-a-revolution-the-making-of-an-activist.pdf
    • http://www.gorillawalker.com/journey-without-maps-penguin-classics.pdf
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    • http://www.gorillawalker.com/sitt-studies-for-violin-part-1-twenty-studies-in-the.pdf
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    • http://www.gorillawalker.com/the-living-environment-prentice-hall-brief-review-for-the-new.pdf
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    • http://www.gorillawalker.com/mosby-s-textbook-for-long-term-care-assistants-ltc-textbook.pdf
    • http://www.gorillawalker.com/36th-publication-design-annual-vol-36.pdf
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    • http://www.gorillawalker.com/librarian-s-guides-to-developing-christian-fiction-collections.pdf
    • http://www.gorillawalker.com/copenhagen-and-environs-a-handbook-for-tourists-borup-s-guide.pdf
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    • http://www.gorillawalker.com/precalculus-student-success-organizer-6th-edition.pdf
    • http://www.gorillawalke
    • 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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