Malicious PDF — malware analysis report

Static analysis result for SHA-256 b9dfaaa38c50675b…

MALICIOUS

PDF

34.1 KB Created: 2020-01-17 19:19:59 +03:00 Authoring application: PrimoPDF http://www.primopdf.com (via Nitro PDF PrimoPDF)
MD5: bcaee841faeb185188b0bf1782e10672 SHA-1: fa425b283a1c851c14a1c60e63306b288708be73 SHA-256: b9dfaaa38c50675bea95b5fc624fd3a9f869f95736afb35f8bc147a92e0ec07b
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, as indicated by the PDF_SEO_LINK_FARM heuristic. The ML classifier also flagged this PDF as malicious. The document body is heavily obfuscated and does not provide clear textual lures, but the sheer volume of links suggests an attempt to drive traffic or potentially host malicious content indirectly. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8015

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/forget-me-not.pdf
    • http://www.gorillawalker.com/culture-shock-scotland-a-guide-to-customs-and-etiquette.pdf
    • http://www.gorillawalker.com/leadership-and-the-art-of-conversation-conversation-as-a-management.pdf
    • http://www.gorillawalker.com/bob-harris-guide-to-stamped-concrete.pdf
    • http://www.gorillawalker.com/towards-convergence-thailand-s-telecom-and-broadcasting-policy-kindle-edition.pdf
    • http://www.gorillawalker.com/gymnastics-your-best-meet-ever.pdf
    • http://www.gorillawalker.com/initiation-into-hermetics-kindle-edition.pdf
    • http://www.gorillawalker.com/warranty-management-product-manufacture-by-murthy-d-n-prabhakar-blischke.pdf
    • http://www.gorillawalker.com/magnificat-book-four-in-the-galactic-milieu-series-the-galactic.pdf
    • http://www.gorillawalker.com/oase-79-the-architecture-of-james-stirling-1964-1992-a.pdf
    • http://www.gorillawalker.com/how-to-pour-cereal-breakfast-cooking-for-weight-loss-binge.pdf
    • http://www.gorillawalker.com/wave-swept-shore-the-rigors-of-life-on-a-rocky.pdf
    • http://www.gorillawalker.com/los-consejos-y-remedios-de-la-abuela-the-grandmother-s.pdf
    • http://www.gorillawalker.com/gerrard-my-autobiography.pdf
    • http://www.gorillawalker.com/holography-the-fundamentals-properties-and-applications-of-hologram-are-reviewed.pdf
    • http://www.gorillawalker.com/american-constitutional-law-powers-and-liberties-2015-case-supplement.pdf
    • http://www.gorillawalker.com/the-tatman.pdf
    • http://www.gorillawalker.com/angel-blood-the-ryan-chronicles-book-4.pdf
    • http://www.gorillawalker.com/island-of-the-day-before-1st-us.pdf
    • http://www.gorillawalker.com/the-road-back-living-with-a-physical-disability.pdf
    • http://www.gorillawalker.com/manual-of-contract-documents-for-highway-works-part-1.pdf
    • http://www.gorillawalker.com/commentary-on-deuteronomy-kindle-edition.pdf
    • http://www.gorillawalker.com/assessment-the-cornerstone-of-activity-programs.pdf
    • http://www.gorillawalker.com/anatomie-einer-pathogenen-beziehung-german-edition.pdf
    • http://www.gorillawalker.com/high-temperature-superconductors-synthesis-processing-and-applications-ii.pdf
    • http://www.gorillawalker.com/basic-gas-chromatography-2nd-second-edition-by-mcnair-harold-m.pdf
    • http://www.gorillawalker.com/the-engaged-leader-a-strategy-for-your-digital-transformation-kindle.pdf
    • http://www.gorillawalker.com/jataka-tales-51-short-stories-with-moral-illustrated.pdf
    • http://www.gorillawalker.com/taxi-driver-bfi-film-classics.pdf
    • http://www.gorillawalker.com/edwardian-portraits-images-of-the-age-of-opulence.pdf
    • http://www.gorillawalker.com/the-ultimate-guide-to-bowhunting-skills-tactics-and-techniques.pdf
    • http://www.gorillawalker.com/josefina-s-craft-book-american-girl-collection.pdf
    • http://www.gorillawalker.com/a-hoosier-in-honduras.pdf
    • http://www.gorillawalker.com/mission-on-the-road-to-emmaus.pdf
    • http://www.gorillawalker.com/exploration-fawcett.pdf
    • http://www.gorillawalker.com/data-abstraction-and-problem-solving-with-java-walls-and-mirrors.pdf
    • http://www.gorillawalker.com/basic-marketing-a-global-managerial-approach-14th-edition.pdf
    • http://www.gorillawalker.com/die-kulturperspektive-von-unternehmungen-eine-analyse-aus-wirtschaftspsychologischer-sicht-kolner.pdf
    • http://www.gorillawalker.com/neuropathology-and-genetics-of-dementia-advances-in-experimental-medicine-and.pdf
    • http://www.gorillawalker.com/complete-book-of-baths.pdf
    • http://www.primopdf.com
    • http://www.gorillawalker.com/oase-79-the-architecture-of-james-stirling-1964-
    • 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#
    +1 more URL(s)

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