Malicious PDF — malware analysis report

Static analysis result for SHA-256 31fb9e3b5eea1c01…

MALICIOUS

PDF

44.3 KB Created: 2018-12-03 17:11:07 +03:00 Authoring application: QuarkXPress(R) 7.01
MD5: 208bbc22e4f76b417313b5bb9915ba0f SHA-1: fefc6721f45c422c3fac0f7b80425087d38892f7 SHA-256: 31fb9e3b5eea1c01b44ad7d0780d75d36673ed7ec0a331562b17a71efbf326be
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded URLs pointing to external websites, as indicated by the PDF_SEO_LINK_FARM heuristic. The ML classifier also flagged this PDF as malicious. While no scripts were extracted, the sheer volume of links suggests an attempt to manipulate search engine results or redirect users to potentially harmful content. The document body is heavily obfuscated and does not provide clear textual lures.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9016

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/a-manual-of-style-a-compilation-of-typographical-rules-governing.pdf
    • http://www.gorillawalker.com/snowbound-curves-curves-for-her-brother-s-best-friend-bbw.pdf
    • http://www.gorillawalker.com/bridges-of-vision-the-art-of-prints-and-the-craft.pdf
    • http://www.gorillawalker.com/non-hermitian-quantum-mechanics.pdf
    • http://www.gorillawalker.com/mcconnell-air-force-base-images-of-aviation-kansas.pdf
    • http://www.gorillawalker.com/ohio-consumer-law-legal-aid-society-of-cleveland-ohio-state.pdf
    • http://www.gorillawalker.com/economic-analysis-of-law.pdf
    • http://www.gorillawalker.com/the-rhetoric-of-interruption-beihefte-zur-zeitschrift-fur-die-neutestamentliche.pdf
    • http://www.gorillawalker.com/nauti-and-wild-nauti-boys.pdf
    • http://www.gorillawalker.com/live-design-wall-calendar-2016-interior-design-calendar-photography-calendar.pdf
    • http://www.gorillawalker.com/beneath-the-surface-killer-whales-seaworld-and-the-truth-beyond.pdf
    • http://www.gorillawalker.com/dear-elijah.pdf
    • http://www.gorillawalker.com/the-impressionist-print.pdf
    • http://www.gorillawalker.com/a-collector-s-guide-to-the-03-springfield.pdf
    • http://www.gorillawalker.com/evaluating-reasoning-systems.pdf
    • http://www.gorillawalker.com/the-second-oswald.pdf
    • http://www.gorillawalker.com/legal-practice-in-eighteenth-century-scotland-studies-in-the-history.pdf
    • http://www.gorillawalker.com/coping-with-chaos-seven-simple-tools-paperback.pdf
    • http://www.gorillawalker.com/the-case-for-greatness-honorable-ambition-and-its-critics.pdf
    • http://www.gorillawalker.com/la-cocina-argentina-the-argentinean-cooking-spanish-edition.pdf
    • http://www.gorillawalker.com/without-a-friend-why-the-world-is-turning-against-israel.pdf
    • http://www.gorillawalker.com/piano-tuning-a-simple-and-accurate-method-for-amateurs-dover.pdf
    • http://www.gorillawalker.com/federal-anti-trust-decisions-volume-6-adjudicated-cases-and-opinions.pdf
    • http://www.gorillawalker.com/grandmother-s-memories-journal.pdf
    • http://www.gorillawalker.com/foundations-of-marketing.pdf
    • http://www.gorillawalker.com/stepping-stones-memoir-of-a-life-together.pdf
    • http://www.gorillawalker.com/a-dormir-beb-ecol-gico-spanish-edition.pdf
    • http://www.gorillawalker.com/lifespan-development-plus-new-mypsychlab-with-pearson-etext-access-card.pdf
    • http://www.gorillawalker.com/christie-s-east-jan-24-1996-catalog-americana-including-scientific.pdf
    • http://www.gorillawalker.com/e-d-t-a-this-four-letter-word-may-save.pdf
    • http://www.gorillawalker.com/cia-life-10-000-days-with-the-agency.pdf
    • http://www.gorillawalker.com/unleashing-the-word-rediscovering-the-public-reading-of-scripture.pdf
    • http://www.gorillawalker.com/just-the-way-you-are-big-note-piano-sheet.pdf
    • http://www.gorillawalker.com/national-geographic-traveler-athens-and-the-island-national-geographic-traveler.pdf
    • http://www.gorillawalker.com/the-color-of-secrets-kindle-edition.pdf
    • http://www.gorillawalker.com/the-classic-clark-collection.pdf
    • http://www.gorillawalker.com/promo-with-marketing-coursemate-with-ebook-printed-access-card.pdf
    • http://www.gorillawalker.com/cries-of-the-spirit-more-than-300-poems-in-celebration.pdf
    • http://www.gorillawalker.com/the-clinical-interview-of-the-child.pdf
    • http://www.gorillawalker.com/metal-ceramic-and-composite-materials-advanced-materials-research.pdf
    • http://www.gorillawalke
    • 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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