Malicious PDF — malware analysis report

Static analysis result for SHA-256 b73a5012bd4d1304…

MALICIOUS

PDF

32.9 KB Created: 2019-09-15 19:14:09 +03:00 Authoring application: AdobePS5.dll Version 5.0.1 (via Acrobat Distiller 4.0 for Windows)
MD5: a2c76f8f9f2278230b8fbb0405d8b9e6 SHA-1: 1174ee8d29e919e35a656aac26a9b7ca773f0a12 SHA-256: b73a5012bd4d1304a0c0e8217fba93fffbe93de9914ced129ce95375e7f7405a
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various PDF files on the domain www.gorillawalker.com. This suggests a link farm or SEO poisoning tactic, likely intended to drive traffic or potentially host malicious content indirectly. No scripts were extracted, and the document body was heavily obfuscated, making it difficult to determine the exact user-facing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8529

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/mineral-digest-the-journal-of-mineralogy-vol-4.pdf
    • http://www.gorillawalker.com/falling-over-backwards.pdf
    • http://www.gorillawalker.com/the-abc-s-of-philadelphia-an-illustrated-guide-to-the.pdf
    • http://www.gorillawalker.com/just-the-facts-writing-your-own-research-report-writer-s.pdf
    • http://www.gorillawalker.com/volcanoes-a-book-about-volcanoes-for-kids-fun-facts-and.pdf
    • http://www.gorillawalker.com/alimentaci-n-saludable-y-nutritiva-mejor-calidad-de-vida-spanish.pdf
    • http://www.gorillawalker.com/brittany-insight-compact-guide-insight-compact-guides.pdf
    • http://www.gorillawalker.com/chopsticks-an-owner-s-manual.pdf
    • http://www.gorillawalker.com/handbook-for-azospirillum-technical-issues-and-protocols.pdf
    • http://www.gorillawalker.com/natural-homemade-cleaning-recipes-with-essential-oils-50-easy-homemade.pdf
    • http://www.gorillawalker.com/textual-memory-five-hundred-years-of-german-intellectual-history-geschichte.pdf
    • http://www.gorillawalker.com/chi-running-a-training-program-for-effortless-injury-free-running.pdf
    • http://www.gorillawalker.com/village-in-the-city-asian-variations-of-urbanisms-of-inclusion.pdf
    • http://www.gorillawalker.com/ancient-greek-houses-and-households-chronological-regional-and-social-diversity.pdf
    • http://www.gorillawalker.com/underworld-vol-4-duh-v-4.pdf
    • http://www.gorillawalker.com/playing-with-fire-kindle-edition.pdf
    • http://www.gorillawalker.com/latin-for-americans-annotated-teacher-edition-english-and-latin-edition.pdf
    • http://www.gorillawalker.com/rough-stuff-tales-of-gay-men-sex-and-power.pdf
    • http://www.gorillawalker.com/the-noh-ominameshi-a-flower-viewed-from-many-directions.pdf
    • http://www.gorillawalker.com/designing-with-web-standards-3rd-edition.pdf
    • http://www.gorillawalker.com/kids-draw-the-fun-draw-the-school-going-dog-kindle.pdf
    • http://www.gorillawalker.com/fail-fail-again-fail-better-wise-advice-for-leaning-into.pdf
    • http://www.gorillawalker.com/uta-barth-the-long-now.pdf
    • http://www.gorillawalker.com/confucius-bold-faced-thoughts-on-loyalty-leadership-and-teamwork-bold.pdf
    • http://www.gorillawalker.com/les-enfants-du-temps-tome-1-ind-cise-volume-1.pdf
    • http://www.gorillawalker.com/the-team-handbook-third-edition.pdf
    • http://www.gorillawalker.com/christ-crucified-lectures-on-1-corinthians-ii-primary-source-edition.pdf
    • http://www.gorillawalker.com/wild-times-ahead-the-teen-girls-guide-to-guys-sex.pdf
    • http://www.gorillawalker.com/eutectic-solidification-processing-crystalline-and-glassy-alloys.pdf
    • http://www.gorillawalker.com/dear-dragon-goes-to-the-fire-house-beginning-to-read.pdf
    • http://www.gorillawalker.com/healing-moments-in-psychotherapy-norton-series-on-interpersonal-neurobiology.pdf
    • http://www.gorillawalker.com/new-practical-chinese-reader-textbook-5-v-5-chinese-edition.pdf
    • http://www.gorillawalker.com/financial-statements-matter-how-to-interpret-balance-sheets-and-profit.pdf
    • http://www.gorillawalker.com/el-manifiesto-comunista.pdf
    • http://www.gorillawalker.com/the-classical-speller-teacher-edition-i-ii-iii-iv-kindle.pdf
    • http://www.gorillawalker.com/descending-the-rising-series.pdf
    • http://www.gorillawalker.com/guides-sixth-impairment-training-spine-guides-sixth-impairment-training-workbook.pdf
    • http://www.gorillawalker.com/100-maps-the-science-art-and-politics-of-cartography-throughout.pdf
    • http://www.gorillawalker.com/close-relationships-family-friendship-marriage-studies-in-jungian-psychology-by.pdf
    • http://www.gorillawalker.com/architectural-woodwork-quality-standards-guide-specifications.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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