Malicious PDF — malware analysis report

Static analysis result for SHA-256 b8bde6d3096a15fb…

MALICIOUS

PDF

43.4 KB Created: 2018-12-02 20:04:05 +03:00 Authoring application: Pages (via Mac OS X 10.11.6 Quartz PDFContext)
MD5: 4e7f3aef41b84428427f2443fab444ce SHA-1: 1c34f5259ea782a17042ca4eb19ea5ff4b5a70ad SHA-256: b8bde6d3096a15fbe86c0e5c1dfbf02d4f5b5019c73ede97fb27d19c2a785bcc
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a heuristic firing for a large number of external links, suggesting a link farm or SEO manipulation tactic. The embedded URLs point to numerous PDF files on the domain 'gorillawalker.com'. The ML classifier also flagged this PDF as malicious. The document body is heavily obfuscated and does not provide clear user-facing text, but the presence of numerous links to external PDFs is the primary indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9171

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/study-guide-for-hoffman-maloney-raabe-young-s-south-western.pdf
    • http://www.gorillawalker.com/anna-weiss.pdf
    • http://www.gorillawalker.com/1001-questions-and-answers-on-philippine-geography-including-third-fourth.pdf
    • http://www.gorillawalker.com/postwar-trends-in-u-s-forest-products-trade-a-global.pdf
    • http://www.gorillawalker.com/man-his-origin-and-destiny.pdf
    • http://www.gorillawalker.com/i-am-a-little-giraffe-large-i-am-series.pdf
    • http://www.gorillawalker.com/design-sprint-a-practical-guidebook-for-creating-great-digital-products.pdf
    • http://www.gorillawalker.com/the-essential-colin-wilson.pdf
    • http://www.gorillawalker.com/giant-pandas-untamed-world.pdf
    • http://www.gorillawalker.com/crop-plant-anatomy.pdf
    • http://www.gorillawalker.com/hard-vacuum-1-kindle-edition.pdf
    • http://www.gorillawalker.com/stunning-butterfly-photos-butterflies-close-up-photo-book-photo-album.pdf
    • http://www.gorillawalker.com/the-mirror-erotica.pdf
    • http://www.gorillawalker.com/fantastic-facts-about-pigs-illustrated-fun-learning-for-kids.pdf
    • http://www.gorillawalker.com/ctia-consolidated-treaties-international-agreements-2010-vol-2-issued-october.pdf
    • http://www.gorillawalker.com/the-union-that-shaped-the-confederacy-robert-toombs-and-alexander.pdf
    • http://www.gorillawalker.com/andr-gide-pederasty-and-pedagogy.pdf
    • http://www.gorillawalker.com/recommendations-on-the-transport-of-dangerous-goods-manual-of-tests.pdf
    • http://www.gorillawalker.com/doppler-ultrasound-in-gynecology-progress-in-obstetric-and-gynecological-sonography.pdf
    • http://www.gorillawalker.com/blood-thunder-the-unofficial-biography-of-jonah-lomu.pdf
    • http://www.gorillawalker.com/roadmap-to-5th-grade-math-north-carolina-edition-state-test.pdf
    • http://www.gorillawalker.com/social-behaviour-in-animals-with-special-reference-to-vertebrates-methuen.pdf
    • http://www.gorillawalker.com/beyond-violence.pdf
    • http://www.gorillawalker.com/choson-nodongdang-yongu-chido-sasang-kwa-kujo-pyonhwa-rul-chungsim.pdf
    • http://www.gorillawalker.com/asking-questions-training-extras.pdf
    • http://www.gorillawalker.com/financial-institutions-management-a-risk-management-approach-with-power-web.pdf
    • http://www.gorillawalker.com/christ-and-the-tao.pdf
    • http://www.gorillawalker.com/the-count-of-monte-cristo-coleccion-clasicos-para-ninos-spanish.pdf
    • http://www.gorillawalker.com/wine-lisa-wolk-2015-pocket-planner.pdf
    • http://www.gorillawalker.com/the-eric-trap.pdf
    • http://www.gorillawalker.com/australia-true-stories-of-life-down-under-travelers-tales.pdf
    • http://www.gorillawalker.com/careers-in-psychology-opportunities-in-a-changing-world.pdf
    • http://www.gorillawalker.com/introduction-to-the-practice-of-fishery-science-revised-edition.pdf
    • http://www.gorillawalker.com/bending-reality.pdf
    • http://www.gorillawalker.com/a-slave-no-more-two-men-who-escaped-to-freedom.pdf
    • http://www.gorillawalker.com/allgemeine-und-angewandte-phonetik-german-edition.pdf
    • http://www.gorillawalker.com/indoor-air-quality-engineering.pdf
    • http://www.gorillawalker.com/joan-of-arc-s-entry-into-orleans-from-an-original.pdf
    • http://www.gorillawalker.com/finite-markov-processes-and-their-applications-dover-books-on-mathematics.pdf
    • http://www.gorillawalker.com/fantasy-football-for-smart-people-how-fantasy-football-pros-game.pdf
    • http://www.gorillawalker.com/design-sprint-a-practical-guidebook-for-creating-great-digital-product
    • 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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