Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2a9fee2b6508d2e…

MALICIOUS

PDF

41.3 KB Created: 2018-12-15 20:10:13 +03:00 Authoring application: Adobe Illustrator CS3 (via Adobe PDF library 8.00)
MD5: a4c90ee268c28e1a07ae070104979ce0 SHA-1: d8509d25877d90b19ec667c118f4aff382920925 SHA-256: e2a9fee2b6508d2e305d048058b50421abe10abf51e94f53a42ef12688c45b89
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links to external PDF files, a technique often used for SEO manipulation or to distribute malicious content. The ML classifier also flagged this PDF as malicious. No scripts were extracted, and the document body was heavily obfuscated, preventing a deeper analysis of the specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9181

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/strengthening-your-singing-voice.pdf
    • http://www.gorillawalker.com/the-grasshopper-the-ants.pdf
    • http://www.gorillawalker.com/klezmer-triptych-for-saxophone-quartet-by-mike-curtis.pdf
    • http://www.gorillawalker.com/revel-for-infants-and-children-prenatal-through-middle-childhood-access.pdf
    • http://www.gorillawalker.com/let-me-gaze-on-the-vision-from-faust-opera-vocal.pdf
    • http://www.gorillawalker.com/bsava-manual-of-canine-and-feline-nephrology-and-urology.pdf
    • http://www.gorillawalker.com/dancing-for-degas-a-novel.pdf
    • http://www.gorillawalker.com/across-the-dark-islands.pdf
    • http://www.gorillawalker.com/galois-theory-for-beginners-a-historical-perspective-student-mathematical-library.pdf
    • http://www.gorillawalker.com/manga-mania-video-games-how-to-draw-the-characters-and.pdf
    • http://www.gorillawalker.com/guest-spot-21-classic-hits-playalong-for-alto-saxophone-blue.pdf
    • http://www.gorillawalker.com/trees-of-hawai-i-kolowalu-books.pdf
    • http://www.gorillawalker.com/practical-low-power-digital-vlsi-design.pdf
    • http://www.gorillawalker.com/expeditions-in-your-classroom-english-language-arts-for-common-core.pdf
    • http://www.gorillawalker.com/john-coltrane-a-discography-and-musical-biography.pdf
    • http://www.gorillawalker.com/the-nuts-and-bolts-of-cardiac-pacing.pdf
    • http://www.gorillawalker.com/voces-de-espana-antologia-literaria-spanish-edition.pdf
    • http://www.gorillawalker.com/hello-dolly-vocal-score.pdf
    • http://www.gorillawalker.com/allen-s-compounded-formulations-the-u-s-pharmacist-collection-1995.pdf
    • http://www.gorillawalker.com/rigby-on-our-way-to-english-big-book-grade-k.pdf
    • http://www.gorillawalker.com/fitness-cross-country-skiing-fitness-spectrum.pdf
    • http://www.gorillawalker.com/biology-benjamin-cummings-series-in-the-life-sciences.pdf
    • http://www.gorillawalker.com/green-architecture-for-the-future.pdf
    • http://www.gorillawalker.com/citadel-of-fear-stony-man.pdf
    • http://www.gorillawalker.com/vietnam-north-1-600-000-travel-map-waterproof-gps-compatible.pdf
    • http://www.gorillawalker.com/enchanted-revenge-empyrean-chronicles-book-1.pdf
    • http://www.gorillawalker.com/managing-for-employee-engagement-poster.pdf
    • http://www.gorillawalker.com/ergebnissteuerung-in-kreditinstituten-european-university-studies-series-v-economics-and.pdf
    • http://www.gorillawalker.com/science-learning-objectives-essential-tools-high-school-for-use-with.pdf
    • http://www.gorillawalker.com/exploring-adobe-indesign-cs5-design-exploration-series.pdf
    • http://www.gorillawalker.com/fichte-s-republic-idealism-history-and-nationalism.pdf
    • http://www.gorillawalker.com/drawing-shojo-manga-vol-1.pdf
    • http://www.gorillawalker.com/compassion-living-in-the-spirit-of-st-francis.pdf
    • http://www.gorillawalker.com/transportation-map-of-xinjiang-gansu-province-qinghai-province-and-tibet.pdf
    • http://www.gorillawalker.com/cyclotomic-fields-i-and-ii-graduate-texts-in-mathematics-v.pdf
    • http://www.gorillawalker.com/the-best-of-andrew-lloyd-webber-easy-piano.pdf
    • http://www.gorillawalker.com/footprints-in-the-sand.pdf
    • http://www.gorillawalker.com/plankton-a-guide-to-their-ecology-and-monitoring-for-water.pdf
    • http://www.gorillawalker.com/burning-all-illusions-writings-from-the-nation-on-race-nation.pdf
    • http://www.gorillawalker.com/managed-care-financial-legal-and-ethical-issues-the-pilgrim-library.pdf
    • http://www.gorillawalker.com/galois-theory-for-
    • 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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