Malicious PDF — malware analysis report

Static analysis result for SHA-256 f1584c2b4a6a89a4…

MALICIOUS

PDF

41.1 KB Created: 2018-11-14 08:38:48 +03:00 Authoring application: Adobe InDesign CS (3.0) (via Adobe PDF Library 6.0)
MD5: 0d8b31fa13bdc3768e62a45a2311440b SHA-1: 6b441388600a6e0271de7861c8559687ba628b17 SHA-256: f1584c2b4a6a89a42487350fcc79b051baaddf294bcc33f818e2d374368391d5
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

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

Machine Learning

  • Nyx PDF Classifier malicious score 0.9027

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/true-version-of-the-philippine-revolution.pdf
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    • http://www.gorillawalker.com/inside-hefner-s-pleasure-domes-xsf-full-color-designing-xanadu.pdf
    • http://www.gorillawalker.com/school-lunches-and-after-school-snacks.pdf
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    • http://www.gorillawalker.com/ancient-rome-100-facts.pdf
    • http://www.gorillawalker.com/economic-evaluation-of-interventions-for-occupational-health-and-safety-developing.pdf
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    • http://www.gorillawalker.com/archaeology-at-el-per-waka-ancient-maya-performances-of-ritual.pdf
    • http://www.gorillawalker.com/early-korea-the-rediscovery-of-kaya-in-history-and-archaeology.pdf
    • http://www.gorillawalker.com/the-man-without-qualities-2-volume-set.pdf
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    • http://www.gorillawalker.com/1-296-act-practice-questions-college-test-preparation-paperback-common.pdf
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    • http://www.gorillawalker.com/art-of-the-classical-world-in-the-metropolitan-museum-of.pdf
    • http://www.gorillawalker.com/practical-sampling-applied-social-research-methods.pdf
    • http://www.gorillawalker.com/the-book-of-eleanor-a-novel-of-eleanor-of-aquitaine.pdf
    • http://www.gorillawalker.com/gutai.pdf
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    • http://www.gorillawalker.com/prepare-to-be-a-millionaire.pdf
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    • http://www.gorillawalker.com/uncharted-strait-the-future-of-china-taiwan-relations.pdf
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    • http://www.gorillawalker.com/ogilvy-on-advertising-kindle-edition.pdf
    • http://www.gorillawalker.com/celebrating-the-harvest-recipes-for-fall-winter-gatherings-special-occasion.pdf
    • http://www.gorillawalker.com/nutrition-and-feeding-of-fish-volume-1.pdf
    • http://www.gorillawalker.com/the-mr-bean-joke-book-the-adventures-of-mr-bean.pdf
    • http://www.gorillawalker.com/traitor-sons-of-don-book-2-kindle-edition.pdf
    • http://www.gorillawalker.com/school-lunches-and-after-school-s
    • 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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