Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9b923a427551b7d…

MALICIOUS

PDF

42.1 KB Created: 2018-11-30 20:56:34 +03:00 Authoring application: Acrobat Distiller 7.0.5 (Windows)
MD5: 179f93d846ff39377585098f2d72dd02 SHA-1: a54be2ef081765df0e9a8c844e5852cdaf95c5c7 SHA-256: a9b923a427551b7dcbb58f05812493e82aa61e5dae04439cea194843f1d78d9d
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, a technique often used for SEO manipulation or to distribute malicious content indirectly. The ML classifier also flagged this PDF as malicious. No scripts were extracted, and the document body was heavily obfuscated, preventing a deeper analysis of the specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8872

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-beginner-s-guide-to-glass-engraving.pdf
    • http://www.gorillawalker.com/make-every-second-count-time-management-tips-and-techniques-for.pdf
    • http://www.gorillawalker.com/let-there-be-light-the-story-of-light-from-atoms.pdf
    • http://www.gorillawalker.com/cft-09-escatolog-a-ii-curso-de-formacion-teologia-evangelica.pdf
    • http://www.gorillawalker.com/the-italian-cooking-encyclopedia.pdf
    • http://www.gorillawalker.com/2012-comprehensive-accreditation-manual-for-home-care-camhc-effective-january.pdf
    • http://www.gorillawalker.com/yoruba-trickster-tales-by-owomoyela-oyekan-1997.pdf
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    • http://www.gorillawalker.com/working-in-teams-fifty-minute-series-book.pdf
    • http://www.gorillawalker.com/the-birds-our-teachers.pdf
    • http://www.gorillawalker.com/here-s-how-prepare-your-curriculum-vitae.pdf
    • http://www.gorillawalker.com/peppa-pig-the-story-of-peppa-pig.pdf
    • http://www.gorillawalker.com/miley-cyrus-me-you-star-of-hannah-montana.pdf
    • http://www.gorillawalker.com/god-s-help-for-parents-with-adult-children-hope-and.pdf
    • http://www.gorillawalker.com/polybius-and-his-world-essays-in-memory-of-f-w.pdf
    • http://www.gorillawalker.com/empowering-students-with-technology.pdf
    • http://www.gorillawalker.com/the-strange-alchemy-of-life-and-law.pdf
    • http://www.gorillawalker.com/origins-of-igneous-rocks.pdf
    • http://www.gorillawalker.com/behold-the-family-circus.pdf
    • http://www.gorillawalker.com/how-to-draw-cartoon-reptiles-really-wild-life-of-snakes.pdf
    • http://www.gorillawalker.com/an-atlas-of-diagnostic-radiology-in-gastroenterology.pdf
    • http://www.gorillawalker.com/hooligans-a-l-of-britain-s-football-gangs-v-1.pdf
    • http://www.gorillawalker.com/telework-and-social-change-how-technology-is-reshaping-the-boundaries.pdf
    • http://www.gorillawalker.com/polymer-engineering-science-and-viscoelasticity-an-introduction.pdf
    • http://www.gorillawalker.com/moliere-s-plays-tartuffe-in-contemporary-american-english-volume-1.pdf
    • http://www.gorillawalker.com/american-war-library-world-war-i-leaders-and-generals.pdf
    • http://www.gorillawalker.com/facilitation-skills-for-ministry.pdf
    • http://www.gorillawalker.com/processes-of-constitutional-decisionmaking-cases-and-materials-casebook-series.pdf
    • http://www.gorillawalker.com/the-practices-of-the-self.pdf
    • http://www.gorillawalker.com/the-move-me-duet-hidden-series.pdf
    • http://www.gorillawalker.com/information-anxiety-2-hayden-que.pdf
    • http://www.gorillawalker.com/you-can-quilt-it-stunning-free-motion-quilting-designs-made.pdf
    • http://www.gorillawalker.com/the-truth-seeker-the-o-malley-series-3.pdf
    • http://www.gorillawalker.com/writing-monsters-how-to-craft-believably-terrifying-creatures-to-enhance.pdf
    • http://www.gorillawalker.com/portals-of-power-magical-agency-and-transformation-in-literary-fantasy.pdf
    • http://www.gorillawalker.com/nur-auf-die-liebe-kommt-es-an-german-edition.pdf
    • http://www.gorillawalker.com/military-cost-benefit-analysis-theory-and-practice-routledge-studies-in.pdf
    • 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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