Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b54483024455089…

MALICIOUS

PDF

34.0 KB Created: 2019-12-14 05:34:45 +03:00 Authoring application: FrameMaker 10.0.2 (via Acrobat Distiller 9.5.5 (Windows))
MD5: 6199832fad9bbdef74a1b4ecbea14caa SHA-1: 7eff9bbe35e834eb893606d8a98a3d938abd699e SHA-256: 7b54483024455089b7eab874a161bb661b0025afd62b7723035d8313cf7f0dbb
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample was identified as malicious by an ML classifier and contains a large number of external links, many of which point to PDF documents. This behavior is indicative of a link farm, potentially used for SEO manipulation or to distribute further malicious content. No scripts were extracted, and the document body was heavily obfuscated, limiting further analysis of specific user-facing lures.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8313

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/strabo-geography-books-15-16-loeb-classical-library-no-241.pdf
    • http://www.gorillawalker.com/3d-scroll-saw-patterns-techniques.pdf
    • http://www.gorillawalker.com/leveled-texts-for-science-3-book-set.pdf
    • http://www.gorillawalker.com/cambridge-igcse-sociology-coursebook-cambridge-international-examinations.pdf
    • http://www.gorillawalker.com/l-ducation-d-un-prince-french-edition.pdf
    • http://www.gorillawalker.com/under-natasha-s-mountains-an-erotic-alien-invasion-story-part.pdf
    • http://www.gorillawalker.com/bach-js-easter-oratorio-voc-sc-score.pdf
    • http://www.gorillawalker.com/selecting-injection-molds.pdf
    • http://www.gorillawalker.com/mozart-arias-for-baritone-bass-the-vocal-library-vocal-collection.pdf
    • http://www.gorillawalker.com/the-rise-and-fall-of-venezuelan-president-carlos-andres-perez.pdf
    • http://www.gorillawalker.com/the-best-bike-rides-in-the-midwest-illinois-indiana-iowa.pdf
    • http://www.gorillawalker.com/royal-air-force-burtonwood-fifty-years-in-photographs.pdf
    • http://www.gorillawalker.com/ophthalmic-assistant-fundamentals-and-clinical-practice.pdf
    • http://www.gorillawalker.com/expositions-of-holy-scripture-psalms-i-to-xlix.pdf
    • http://www.gorillawalker.com/ancestor-of-the-west-writing-reasoning-and-religion-in-mesopotamia.pdf
    • http://www.gorillawalker.com/encyclopedia-of-knots-and-fancy-rope-work.pdf
    • http://www.gorillawalker.com/god-is-no-thing-fresh-ways-of-looking-at-theological.pdf
    • http://www.gorillawalker.com/fractal-magazine-volume-2-issue-1.pdf
    • http://www.gorillawalker.com/the-man-who-discovered-quality-how-w-edwards-deming-brought.pdf
    • http://www.gorillawalker.com/advances-in-experimental-moral-psychology-advances-in-experimental-philosophy.pdf
    • http://www.gorillawalker.com/orthodoxy-hardcover.pdf
    • http://www.gorillawalker.com/the-environmental-psychology-of-prisons-and-jails-creating-humane-spaces.pdf
    • http://www.gorillawalker.com/the-seventh-crusade-12441254-crusade-texts-in-translation.pdf
    • http://www.gorillawalker.com/celebrity-and-power-fame-in-contemporary-culture.pdf
    • http://www.gorillawalker.com/esoteric-anatomy-the-body-as-consciousness.pdf
    • http://www.gorillawalker.com/michelin-the-red-guide-portugal-2000-the-red-guide.pdf
    • http://www.gorillawalker.com/liver-transplantation-update-of-concepts-and-practice-an-issue-of.pdf
    • http://www.gorillawalker.com/the-harrow-fair-cookbook-prize-winning-recipes-inspired-by-one.pdf
    • http://www.gorillawalker.com/wiley-cpa-examination-review-problems-and-solutions-volume-2.pdf
    • http://www.gorillawalker.com/children-noble-causes-or-worthy-citizens.pdf
    • http://www.gorillawalker.com/the-greek-world-the-making-of-the-past.pdf
    • http://www.gorillawalker.com/white-tigers-my-secret-war-in-north-korea.pdf
    • http://www.gorillawalker.com/integrated-m-e-design-building-systems-engineering.pdf
    • http://www.gorillawalker.com/technical-analysis-and-financial-asset-forecasting-from-simple-tools-to.pdf
    • http://www.gorillawalker.com/hope-for-a-hopeless-day.pdf
    • http://www.gorillawalker.com/morir-por-ti-descubriendo-a-seytton-n-3-spanish-edition.pdf
    • http://www.gorillawalker.com/by-princeton-review-the-best-167-medical-schools-2014-edition.pdf
    • http://www.gorillawalker.com/microwave-and-wireless-measurement-techniques-the-cambridge-rf-and-microwave.pdf
    • http://www.gorillawalker.com/ballentine-s-law-dictionary.pdf
    • http://www.gorillawalker.com/a-history-of-modern-aesthetics-3-volume-set.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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