Malicious PDF — malware analysis report

Static analysis result for SHA-256 31cf68a39fa8c777…

MALICIOUS

PDF

42.9 KB Created: 2018-11-25 20:18:13 +03:00 Authoring application: Word (via Mac OS X 10.8.5 Quartz PDFContext)
MD5: dc690a1f967ac9dc83f74f424f1c02c1 SHA-1: f0678d7cb41456659bdd0d8e81f8b91861867e14 SHA-256: 31cf68a39fa8c777688be31e5945dee9883313e0b687431c013c708eceea585c
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment

The PDF file contains a large number of embedded links to external PDF documents, primarily hosted on 'gorillawalker.com'. This behavior is indicative of a link farm or a redirection mechanism, likely intended to lead users to malicious content or phishing pages. No scripts were extracted, and the document body was heavily obfuscated, making it difficult to determine the exact final payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8242

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/death-takes-a-holiday-piano-vocal-selections.pdf
    • http://www.gorillawalker.com/birthday-of-the-infanta-chamber-opera-in-one-act-words.pdf
    • http://www.gorillawalker.com/yachtmaster-shore-based-course-notes.pdf
    • http://www.gorillawalker.com/cancer-rehabilitation-and-survivorship-transdisciplinary-approaches-to-personalized-care.pdf
    • http://www.gorillawalker.com/the-ten-thousand-portal-wars-ii-kindle-edition.pdf
    • http://www.gorillawalker.com/the-foreign-policy-of-saudi-arabia-harvard-middle-eastern-studies.pdf
    • http://www.gorillawalker.com/i-have-a-bad-feeling-about-this.pdf
    • http://www.gorillawalker.com/spirits-of-the-plains-library-of-native-peoples.pdf
    • http://www.gorillawalker.com/zagat-san-francisco-bay-area-restaurants-zagat-survey-san-francisco.pdf
    • http://www.gorillawalker.com/baby-horses-blastoff-readers-super-cute.pdf
    • http://www.gorillawalker.com/god-s-dream.pdf
    • http://www.gorillawalker.com/selling-to-the-top-david-peoples-executive-selling-skills.pdf
    • http://www.gorillawalker.com/the-elaborate-entrance-of-chad-deity.pdf
    • http://www.gorillawalker.com/ftce-elementary-education-k-6-teacher-certification-test-prep-study.pdf
    • http://www.gorillawalker.com/entr.pdf
    • http://www.gorillawalker.com/divided-highways-building-the-interstate-highways-transforming-american-life-kindle.pdf
    • http://www.gorillawalker.com/walt-disney-world-extreme-vacation-guide-for-kids-extreme-vacation.pdf
    • http://www.gorillawalker.com/encounters-with-animals.pdf
    • http://www.gorillawalker.com/la-obra-literaria-de-manuel-m-ndez-ballester-spanish-edition.pdf
    • http://www.gorillawalker.com/switching-power-converters-medium-and-high-power-second-edition.pdf
    • http://www.gorillawalker.com/my-home-cook-recipe-secrets-kindle-edition.pdf
    • http://www.gorillawalker.com/the-no-nonsense-guide-to-human-rights-no-nonsense-guides.pdf
    • http://www.gorillawalker.com/yosemite-valley-an-intimate-guide.pdf
    • http://www.gorillawalker.com/formularios-procesales-civiles-spanish-edition-kindle-edition.pdf
    • http://www.gorillawalker.com/bath-history-v-8.pdf
    • http://www.gorillawalker.com/seven-sacraments-teacher-s-guide-elem.pdf
    • http://www.gorillawalker.com/baby-animals-picture-and-trivia-book-for-babies-and-toddlers.pdf
    • http://www.gorillawalker.com/eve-s-apples-the-second-edition-an-adult-collection-of.pdf
    • http://www.gorillawalker.com/a-likely-story-farce.pdf
    • http://www.gorillawalker.com/reliability-of-electronic-components-a-practical-guide-to-electronic-systems.pdf
    • http://www.gorillawalker.com/examples-explanations-family-law-3rd-edition.pdf
    • http://www.gorillawalker.com/the-virtue-of-sympathy-magic-philosophy-and-literature-in-seventeenth.pdf
    • http://www.gorillawalker.com/transition-at-a-crossroads-tunisia-three-years-after-the-revolution.pdf
    • http://www.gorillawalker.com/the-essential-william-james.pdf
    • http://www.gorillawalker.com/compilation-of-maritime-laws-2008.pdf
    • http://www.gorillawalker.com/advanced-placement-united-states-government-and-politics.pdf
    • http://www.gorillawalker.com/leopoldstadt-eine-insel-mitten-in-der-stadt-german-edition.pdf
    • http://www.gorillawalker.com/fright-court.pdf
    • http://www.gorillawalker.com/skywatch-west-revised-edition-the-complete-weather-guide.pdf
    • http://www.gorillawalker.com/constructive-adpositional-grammars-foundations-of-constructive-linguistics.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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