Malicious PDF — malware analysis report

Static analysis result for SHA-256 9cbf8e27d0f62012…

MALICIOUS

PDF

40.1 KB Created: 2018-12-15 21:31:49 +03:00 Authoring application: Adobe InDesign CC 2015 (Macintosh) (via Adobe PDF Library 15.0)
MD5: fc20d50b0d84f0ef0f80107d4e952483 SHA-1: a4f7a77663e1660c2e95c93006c6f23c0a71943c SHA-256: 9cbf8e27d0f620127fffc7be89ced6583976ea6a14d837b9dbca6cd8f6817df2
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF was flagged by an ML classifier and contains a large number of external links, indicating a potential SEO spam or content distribution scheme. The embedded URLs point to various PDF documents hosted on the same domain. No scripts were extracted, and the document body was heavily obfuscated, limiting further analysis of the specific payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9526

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/the-abc-of-behavior-change-a-guide-to-successful-disease.pdf
    • http://www.gorillawalker.com/transworld-snowboarding-december-2013.pdf
    • http://www.gorillawalker.com/the-calcutta-chromosome-a-novel-of-fevers-delirium-discovery.pdf
    • http://www.gorillawalker.com/venus-in-winter-a-novel-of-bess-of-hardwick.pdf
    • http://www.gorillawalker.com/the-deutsches-museum-munich.pdf
    • http://www.gorillawalker.com/myrtle-allen-s-cooking-at-ballymaloe-house-featuring-100-recipes.pdf
    • http://www.gorillawalker.com/the-pearl-turtleback-school-library-binding-edition.pdf
    • http://www.gorillawalker.com/spanish-english-dictionary-kindle-edition.pdf
    • http://www.gorillawalker.com/aladdin-and-his-wonderfully-infernal-device-kindle-edition.pdf
    • http://www.gorillawalker.com/made-in-the-usa-trading-cards.pdf
    • http://www.gorillawalker.com/active-bank-risk-management-enhancing-investment-and-credit-portfolio-performance.pdf
    • http://www.gorillawalker.com/gregory-rabassa-s-latin-american-literature-a-translator-s-visible.pdf
    • http://www.gorillawalker.com/sinning-for-pastor-knight-2.pdf
    • http://www.gorillawalker.com/german-rocketeers-in-the-heart-of-dixie-making-sense-of.pdf
    • http://www.gorillawalker.com/recetas-b-sicas-de-cocina-espa-ola-basic-spanish-recipies.pdf
    • http://www.gorillawalker.com/entropy-in-dynamical-systems-new-mathematical-monographs-vol-18.pdf
    • http://www.gorillawalker.com/penguin-pedia-photographs-and-facts-from-one-man-s-search.pdf
    • http://www.gorillawalker.com/exam-ref-70-688-supporting-windows-8-1-mcsa.pdf
    • http://www.gorillawalker.com/habermas-the-routledge-philosophers.pdf
    • http://www.gorillawalker.com/consensual-promiscuity-kindle-edition.pdf
    • http://www.gorillawalker.com/in-king-david-s-court-musician-poet-warrior-seducer-and.pdf
    • http://www.gorillawalker.com/a-history-of-jet-propulsion-including-rockets.pdf
    • http://www.gorillawalker.com/holding-their-own-iv-the-ascent-unabridged-audible-audio-edition.pdf
    • http://www.gorillawalker.com/euphoria-s-child-kindle-edition.pdf
    • http://www.gorillawalker.com/breaking-the-new-girl-3-taboo-forbidden-relationship-menage.pdf
    • http://www.gorillawalker.com/photography-and-art-documents-and-dreams-cv-visual-arts-research.pdf
    • http://www.gorillawalker.com/vixen-a-nameless-detective-novel-nameless-detective-novels.pdf
    • http://www.gorillawalker.com/alaska-a-photographic-journey-through-the-last-wilderness.pdf
    • http://www.gorillawalker.com/locomotive-kit-chassis-construction-in-4mm-scale.pdf
    • http://www.gorillawalker.com/the-natural-superiority-of-women-5th-edition.pdf
    • http://www.gorillawalker.com/tennessee-the-history-of-an-american-state.pdf
    • http://www.gorillawalker.com/strategic-marketing-problems-cases-and-comments-13th-edition.pdf
    • http://www.gorillawalker.com/the-analytical-puzzle-profitable-data-warehousing-business-intelligence-and-analytics.pdf
    • http://www.gorillawalker.com/the-nature-of-natural-philosophy-in-the-late-middle-ages.pdf
    • http://www.gorillawalker.com/corvallis-albany-lebanon-oregon-city-street-map.pdf
    • http://www.gorillawalker.com/reaching-your-potential-personal-and-professional-development-textbook-specific-csfi.pdf
    • http://www.gorillawalker.com/release-your-kinetic-chain-with-exercises-for-the-shoulder-to.pdf
    • http://www.gorillawalker.com/ap-psychology-2015-review-book-for-psychology-exam-with-practice.pdf
    • http://www.gorillawalker.com/lacy-eye.pdf
    • http://www.gorillawalker.com/the-dark-bride-a-novel.pdf
    • http://www.gorillawalker.com/aladdin-and-his-wonderfully-infernal-device-kindle-edition
    • 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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