Malicious PDF — malware analysis report

Static analysis result for SHA-256 a6851986d8fa8f90…

MALICIOUS

PDF

44.5 KB Created: 2019-02-13 19:32:34 +03:00 Authoring application: Adobe Photoshop 5.0 (via Adobe Photoshop for Windows)
MD5: c14b4cb61d8ec6812e9042964441a856 SHA-1: 7e09ad52838ed0e3195649598041273d886b32f9 SHA-256: a6851986d8fa8f9054cafdd3ef8c9edd16eb5038f3c49f299b5d7f7469e2ab27
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs pointing to external PDF documents, as indicated by the PDF_SEO_LINK_FARM heuristic. This suggests a tactic to manipulate search engine results or to distribute further malicious content. The ML classifier also flagged the document as malicious. No scripts were extracted from this sample, and the document body was heavily truncated, limiting further analysis of the specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8439

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/agent-based-models-of-the-economy-from-theories-to-applications.pdf
    • http://www.gorillawalker.com/using-spss-for-windows-and-macintosh-analyzing-and-understanding-data.pdf
    • http://www.gorillawalker.com/village-economies-the-design-estimation-and-use-of-villagewide-economic.pdf
    • http://www.gorillawalker.com/porsche-904-the-truth-and-the-rumours-the-cars-the.pdf
    • http://www.gorillawalker.com/talk-is-cheap-sarcasm-alienation-and-the-evolution-of-language.pdf
    • http://www.gorillawalker.com/finding-willow-finding-home-book-3-kindle-edition.pdf
    • http://www.gorillawalker.com/the-great-god-pan.pdf
    • http://www.gorillawalker.com/the-well-disciplined-husband-submitting-to-alexis-two-novellas.pdf
    • http://www.gorillawalker.com/the-borgias-and-their-enemies-1431-1519.pdf
    • http://www.gorillawalker.com/list-of-available-publications-of-the-united-states-department-of.pdf
    • http://www.gorillawalker.com/mini-farming-how-to-create-a-self-sufficient-backyard-urban.pdf
    • http://www.gorillawalker.com/fia-foundations-in-audit-uk-fau-study-text.pdf
    • http://www.gorillawalker.com/journey-to-mustang-tucci-nepal-expedition-1952.pdf
    • http://www.gorillawalker.com/essentials-of-accounting-for-governmental-and-not-for-profit-organizations.pdf
    • http://www.gorillawalker.com/365-tangles-counting-kindle-edition.pdf
    • http://www.gorillawalker.com/frank-martin-ballade-for-trombone-or-tenor-saxophone-and-piano.pdf
    • http://www.gorillawalker.com/cma-part-2-financial-decision-making-exam-flashcard-study-system.pdf
    • http://www.gorillawalker.com/flora-of-mount-rainier-national-park.pdf
    • http://www.gorillawalker.com/cyber-war-will-not-take-place.pdf
    • http://www.gorillawalker.com/we-landed-at-dawn.pdf
    • http://www.gorillawalker.com/ultimate-boat-wall-calendar-2002.pdf
    • http://www.gorillawalker.com/maasai-heritage-library-of-african-peoples.pdf
    • http://www.gorillawalker.com/comfort-and-design-principles-and-good-practice.pdf
    • http://www.gorillawalker.com/diy-media-creating-sharing-and-learning-with-new-technologies-new.pdf
    • http://www.gorillawalker.com/practical-guide-to-u-s-taxation-of-international-transactions-7th.pdf
    • http://www.gorillawalker.com/the-moral-menagerie-philosophy-and-animal-rights.pdf
    • http://www.gorillawalker.com/architectural-map-eastern-docklands-amsterdam.pdf
    • http://www.gorillawalker.com/international-and-development-communication-a-21st-century-perspective.pdf
    • http://www.gorillawalker.com/cakes-pastries-cakes-pastries-to-make-just-the-way-you.pdf
    • http://www.gorillawalker.com/quand-une-jeune-femme-v.pdf
    • http://www.gorillawalker.com/the-powerscore-lsat-logic-games-bible-workbook-text-only-workbook.pdf
    • http://www.gorillawalker.com/citizen-x-agu-border-patrol-book-1-kindle-edition.pdf
    • http://www.gorillawalker.com/apollo-concerto-2-for-oboe-score-and-parts-for-orchestra.pdf
    • http://www.gorillawalker.com/la-farmacia-natural.pdf
    • http://www.gorillawalker.com/anti-federalist-papers-kindle-edition.pdf
    • http://www.gorillawalker.com/top-ten-sights-hong-kong-kindle-edition.pdf
    • http://www.gorillawalker.com/horseracing-exactas-the-simple-guide-to-understanding-and-playing-exactas.pdf
    • http://www.gorillawalker.com/the-age-of-odin-pantheon-book-3.pdf
    • http://www.gorillawalker.com/about-dogs-we-both-read-level-k-1-quality.pdf
    • http://www.gorillawalker.com/smuggling-armageddon-the-nuclear-black-market-in-the-former-soviet.pdf
    • http://www.gorillawalker.com/talk-is-cheap-sarcasm-alienation-and-the-ev
    • 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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