Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb9aebf39f610f8a…

MALICIOUS

PDF

42.4 KB Created: 2019-04-03 18:20:55 +03:00 Authoring application: Adobe InDesign CC (Macintosh) (via Adobe PDF Library 11.0)
MD5: 1f5dae82090f7d866a52a3d6ffb9a5e3 SHA-1: 9ac9b656e5babc930215572cf1997124bf981a12 SHA-256: eb9aebf39f610f8a3e7accbfbc758795eece5f45a66a8188411235bbaccfc225
90 Risk Score

Malware Insights

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

The PDF was flagged by a critical heuristic for containing a mass external link farm, with 32 links pointing to various PDF documents. The ML classifier also strongly indicated maliciousness. While no scripts were extracted, the sheer volume of external links suggests an attempt to manipulate search engine results or redirect users to potentially harmful content hosted on the `gorillawalker.com` domain.

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/street-atlas-glasgow.pdf
    • http://www.gorillawalker.com/african-calliope.pdf
    • http://www.gorillawalker.com/the-wholeness-of-nature-goethe-s-way-toward-a-science.pdf
    • http://www.gorillawalker.com/the-art-of-star-wars-classic-characters-1998-calendar.pdf
    • http://www.gorillawalker.com/desertion-in-the-time-of-vietnam-a-memoir.pdf
    • http://www.gorillawalker.com/kata-bunkai-the-secret-karate-techniques.pdf
    • http://www.gorillawalker.com/lightweight-black-death-lightweight-collection-volume-2.pdf
    • http://www.gorillawalker.com/cerebral-arterial-disease.pdf
    • http://www.gorillawalker.com/maxfield-parrish-painter-of-magical-make-believe.pdf
    • http://www.gorillawalker.com/probability-measures-on-metric-spaces-ams-chelsea-publishing.pdf
    • http://www.gorillawalker.com/fly-guy-presents-sharks-kindle-edition.pdf
    • http://www.gorillawalker.com/money-matters-stepping-stones-business-tips-stepping-stones-series-kindle.pdf
    • http://www.gorillawalker.com/crossing-the-ditch.pdf
    • http://www.gorillawalker.com/los-chakras-en-la-pr.pdf
    • http://www.gorillawalker.com/the-mosaic-of-economic-growth.pdf
    • http://www.gorillawalker.com/mini-weapons-of-mass-destruction-2-build-a-secret-agent.pdf
    • http://www.gorillawalker.com/cooking-for-one-365-days-of-easy-recipes-for-one.pdf
    • http://www.gorillawalker.com/christian-instruction-admonition-and-grace-the-christian-combat-faith-hope.pdf
    • http://www.gorillawalker.com/keys-for-men-keys-for.pdf
    • http://www.gorillawalker.com/warren-buffett-accounting-book-reading-financial-statements-for-value-investing.pdf
    • http://www.gorillawalker.com/drilling-technology-in-nontechnical-language.pdf
    • http://www.gorillawalker.com/louise-erdrich-s-love-medicine-a-casebook-casebooks-in-criticism.pdf
    • http://www.gorillawalker.com/revised-lithography-lab-manual.pdf
    • http://www.gorillawalker.com/taylor-swift-stars-of-today-child-s-world.pdf
    • http://www.gorillawalker.com/the-methodology-of-economic-model-building-routledge-revivals-methodology-after.pdf
    • http://www.gorillawalker.com/complex-home-care-part-ii-family-annual-income-insurance-premium.pdf
    • http://www.gorillawalker.com/introducing-language-and-intercultural-communication.pdf
    • http://www.gorillawalker.com/exploring-the-sea-random-house-library-of-knowledge.pdf
    • http://www.gorillawalker.com/neptuno-alegorico-allegorical-neptune-letras-hispanicas-hispanic-writings-spanish-edition.pdf
    • http://www.gorillawalker.com/camera-phone-obsession.pdf
    • http://www.gorillawalker.com/healthcare-information-security-and-privacy.pdf
    • http://www.gorillawalker.com/group-work-skills-and-strategies-for-effective-interventions.pdf
    • http://www.gorillawalker.com/the-kabbalistic-murder-code.pdf
    • http://www.gorillawalker.com/meredith-music-intermediate-studies-for-developing-artists-on-trombone-euphonium.pdf
    • http://www.gorillawalker.com/cole-porter-classics-jazz-play-along-series.pdf
    • http://www.gorillawalker.com/common-law-marriage-issues-the-law-an-article-from-risk.pdf
    • http://www.gorillawalker.com/kenya-between-hope-and-despair-1963-2012.pdf
    • http://www.gorillawalker.com/compilers-principles-techniques-and-tools-2nd-edition.pdf
    • http://www.gorillawalker.com/high-tide-a-photographic-journey-to-the-far-corners-of.pdf
    • http://www.gorillawalker.com/le-morte-darthur-v2.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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