Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd21df08c99f9c22…

MALICIOUS

PDF

32.6 KB Created: 2020-01-03 22:22:01 +03:00 Authoring application: GPL Ghostscript 8.64 (via Adobe PDF Library 8.0)
MD5: 23c5c61ec283876812d69e1de17e8908 SHA-1: 63fc1db53f98b64d46c42fd300cb0aea8fd73176 SHA-256: dd21df08c99f9c220f51102542b809af723e5549e0d7d257c57108d7d8c55520
90 Risk Score

Malware Insights

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

The PDF was flagged by an ML classifier and contains a significant number of external links, indicating a potential SEO manipulation or redirection scheme. The heuristic 'PDF_SEO_LINK_FARM' specifically points to a large number of external PDF links hosted on 'www.gorillawalker.com'. While no scripts were extracted, the sheer volume of links suggests an attempt to drive traffic or distribute further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8313

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/symphony-concertante-op-84-kalmus-edition.pdf
    • http://www.gorillawalker.com/the-lean-body-promise-burn-away-fat-and-release-the.pdf
    • http://www.gorillawalker.com/the-magic-of-disney-storybook-collection-disney-storybook-collections.pdf
    • http://www.gorillawalker.com/messa-di-gloria-satb-orch-acc-belwin-edition.pdf
    • http://www.gorillawalker.com/the-bonds-of-matrimony-hsing-shih-yin-yuan-chuan-a.pdf
    • http://www.gorillawalker.com/advanced-timber-framing-joinery-design-construction-of-timber-frame-roof.pdf
    • http://www.gorillawalker.com/truth-meaning-experience.pdf
    • http://www.gorillawalker.com/applications-of-the-neuman-systems-model-in-caring-for-post.pdf
    • http://www.gorillawalker.com/sex-lies-and-forgiveness-third-edition.pdf
    • http://www.gorillawalker.com/expert-success.pdf
    • http://www.gorillawalker.com/customs-bulletin-v-32-january-december-1998-treasury-decisions-under.pdf
    • http://www.gorillawalker.com/glory-hole-book-5-judge-not.pdf
    • http://www.gorillawalker.com/spyro-the-dragon-prima-s-official-strategy-guide.pdf
    • http://www.gorillawalker.com/culturally-relevant-teaching-hip-hop-pedagogy-in-urban-schools-counterpoints.pdf
    • http://www.gorillawalker.com/los-amigos-del-bebe.pdf
    • http://www.gorillawalker.com/dorothy-l-sayers-her-life-and-soul.pdf
    • http://www.gorillawalker.com/coping-with-your-premature-baby-what-to-expect-when-your.pdf
    • http://www.gorillawalker.com/biggest-book-of-30-minute-meals-better-homes-gardens-cooking.pdf
    • http://www.gorillawalker.com/christmas-program-ideas.pdf
    • http://www.gorillawalker.com/modern-toy-train-repair-maintenance-classic-toy-trains-books.pdf
    • http://www.gorillawalker.com/the-collector-s-guide-to-heavy-metal-volume-4-the.pdf
    • http://www.gorillawalker.com/trust-rules-how-to-tell-the-good-guys-from-the.pdf
    • http://www.gorillawalker.com/veterinary-neuroanatomy-a-clinical-approach-1e-by-thomson-bvsc-hons.pdf
    • http://www.gorillawalker.com/historians-debate-the-rise-of-the-west.pdf
    • http://www.gorillawalker.com/aprender-com-mapas-mentais-uma-estrategia-para-pensar-e-estudar.pdf
    • http://www.gorillawalker.com/italia-2014-calender-by-robert-kaufman-english-and-italian-edition.pdf
    • http://www.gorillawalker.com/mangez-et-fondez-comment-augmenter-son-metabolisme-par-la-nutrition.pdf
    • http://www.gorillawalker.com/the-silver-slippers-magic-charm-book.pdf
    • http://www.gorillawalker.com/captivating-crosswords-puzzle-books.pdf
    • http://www.gorillawalker.com/integrated-treatment-for-psychiatric-disorders-review-of-psychiatry.pdf
    • http://www.gorillawalker.com/veterinary-microbiology-experimental-course.pdf
    • http://www.gorillawalker.com/gourmet-cooking-with-rosettes-kalkus-hirco-inc.pdf
    • http://www.gorillawalker.com/global-business-negotiations-a-practical-guide.pdf
    • http://www.gorillawalker.com/gurps-supers-4ed-op.pdf
    • http://www.gorillawalker.com/defending-politics-why-democracy-matters-in-the-twenty-first-century.pdf
    • http://www.gorillawalker.com/world-war-i-timelines.pdf
    • http://www.gorillawalker.com/flaubert-postsecular-modernity-crossed-out-cultural-memory-in-the-present.pdf
    • http://www.gorillawalker.com/the-last-prodigy-a-biography-of-erich-wolfgang-korngold.pdf
    • http://www.gorillawalker.com/dark-back-of-time-vintage-international.pdf
    • http://www.gorillawalker.com/the-force-of-destiny-a-history-of-italy-since-1796.pdf
    • http://www.gorillawalker.com/glory-hole-book-5-judge-not.p
    • 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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