Malicious PDF — malware analysis report

Static analysis result for SHA-256 be900adc4f071509…

MALICIOUS

PDF

41.3 KB Created: 2019-04-11 13:06:20 +03:00 Authoring application: Adobe InDesign CS3 (5.0.2) (via Adobe PDF Library 8.0)
MD5: e822ba7b3f8afe8ed5a0b167591299ea SHA-1: 7cad8d4fd67970c046131e8cedb2a38ca9b2b9d8 SHA-256: be900adc4f0715097a642e82e4af1e75ba9adf34506d19a5010dc8bc52930a55
90 Risk Score

Malware Insights

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

The PDF was flagged by a machine learning classifier and a critical heuristic for containing a large number of external links to other PDF files. This suggests a link farm or a distribution mechanism for malicious content. The document body is heavily obfuscated and does not provide clear textual clues, but the presence of numerous links to PDFs on 'gorillawalker.com' is the primary indicator of malicious intent.

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/balsamic-dreams.pdf
    • http://www.gorillawalker.com/the-story-of-daniel-o-connell-irish-heroes-for-children.pdf
    • http://www.gorillawalker.com/secure-in-heart-overcoming-insecurity-in-a-woman-s-life.pdf
    • http://www.gorillawalker.com/fabulous-and-funny-clean-jokes-for-kids.pdf
    • http://www.gorillawalker.com/william-m-kunstler.pdf
    • http://www.gorillawalker.com/a-place-of-wonder-adventures-in-odyssey.pdf
    • http://www.gorillawalker.com/the-music-of-time.pdf
    • http://www.gorillawalker.com/pet-chameleons-101-all-you-need-to-know-about-keeping.pdf
    • http://www.gorillawalker.com/canterbury-town-city-series-pictorial-memories.pdf
    • http://www.gorillawalker.com/a-guide-to-customer-service-skills-for-the-service-desk.pdf
    • http://www.gorillawalker.com/woman-of-strength-learning-from-the-proverbs-31-woman.pdf
    • http://www.gorillawalker.com/dinosaur-tracks-and-other-fossil-footprints-of-europe.pdf
    • http://www.gorillawalker.com/resisting-temptation-men-of-honor-volume-3.pdf
    • http://www.gorillawalker.com/hollywood-representation-directory-april-2009.pdf
    • http://www.gorillawalker.com/d-os-cl-sicos-de-viol-n-viola-piezas-f.pdf
    • http://www.gorillawalker.com/cancer-prevention-and-nutritional-therapies.pdf
    • http://www.gorillawalker.com/vat-acts-2015.pdf
    • http://www.gorillawalker.com/maynard-jackson.pdf
    • http://www.gorillawalker.com/ravished-at-the-banquet-thalia-book-3.pdf
    • http://www.gorillawalker.com/the-return-of-eva-peron.pdf
    • http://www.gorillawalker.com/sous-vide-help-for-the-busy-cook-harness-the-power.pdf
    • http://www.gorillawalker.com/teaching-for-ecojustice-curriculum-and-lessons-for-secondary-and-college.pdf
    • http://www.gorillawalker.com/phil-the-poker-brat-hellmuth-superstars-of-poker.pdf
    • http://www.gorillawalker.com/a-funny-thing-happened-on-the-way-to-the-white.pdf
    • http://www.gorillawalker.com/re-visioning-lear-s-daughters-testing-feminist-criticism-and-theory.pdf
    • http://www.gorillawalker.com/letters-of-jane-austen.pdf
    • http://www.gorillawalker.com/play-therapy-an-introduction.pdf
    • http://www.gorillawalker.com/microsoft-sharepoint-2010-development-cookbook.pdf
    • http://www.gorillawalker.com/el-salvador-in-the-aftermath-of-peace-crime-uncertainty-and.pdf
    • http://www.gorillawalker.com/starcraft-ii-wings-of-liberty-bradygames-signature-guides.pdf
    • http://www.gorillawalker.com/curriculum-leadership-readings-for-developing-quality-educational-programs-9th-edition.pdf
    • http://www.gorillawalker.com/algebra-1-2-home-study-arabic-edition.pdf
    • http://www.gorillawalker.com/daphnis-et-chlo-suite-no-1-harp-2-part-qty.pdf
    • http://www.gorillawalker.com/esqui-skiing-deportes-de-moda-spanish-edition.pdf
    • http://www.gorillawalker.com/indulge-me-tonight-harlequin-kimani-romance-kimani-hotties.pdf
    • http://www.gorillawalker.com/defending-peace-and-freedom.pdf
    • http://www.gorillawalker.com/neelon-crawford-tools-of-vision-photographs-of-telescopes-and-particle.pdf
    • http://www.gorillawalker.com/wake-up-wake-up-a-springtime-lift-the-flap-book.pdf
    • http://www.gorillawalker.com/the-palgrave-handbook-of-global-philanthropy-digital.pdf
    • http://www.gorillawalker.com/savage-instinct.pdf
    • http://www.gorilla
    • 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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