Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac18e6ed21921214…

MALICIOUS

PDF

32.5 KB Created: 2019-12-13 20:29:40 +03:00 Authoring application: Adobe Acrobat 8.1 Combine Files (via Acrobat Distiller 8.1.0 (Windows))
MD5: a34cfe9317efd3141311b9cc6df6da24 SHA-1: b1972f12388dbed36f5b6c5e48362cf9b26af786 SHA-256: ac18e6ed219212148022353bee72945b0de4f941dd8dfb0583399f14695a2021
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment

The PDF contains a large number of embedded links to external PDF files, as indicated by the PDF_SEO_LINK_FARM heuristic. This suggests a link farm or redirection strategy to a large collection of documents hosted on www.gorillawalker.com. The ML classifier also flagged the document as malicious. No scripts were extracted from this sample.

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/war-at-the-edge-of-breakthroughs.pdf
    • http://www.gorillawalker.com/osteopathic-medicine-in-oregon-a-look-back.pdf
    • http://www.gorillawalker.com/your-brain-on-love-the-neurobiology-of-healthy-relationships-unabridged.pdf
    • http://www.gorillawalker.com/12-concerti-a-cinque-op-9-oboe-concerto-in-d.pdf
    • http://www.gorillawalker.com/falun-gong-and-the-future-of-china.pdf
    • http://www.gorillawalker.com/victorian-heroines-representations-of-femininity-in-nineteenth-century-literature-and.pdf
    • http://www.gorillawalker.com/the-federal-reserve.pdf
    • http://www.gorillawalker.com/deadline-german-edition-kindle-edition.pdf
    • http://www.gorillawalker.com/diy-tour-in-vietnam.pdf
    • http://www.gorillawalker.com/death-society-and-human-experience.pdf
    • http://www.gorillawalker.com/essential-medical-physiology-lecture-notes-cd.pdf
    • http://www.gorillawalker.com/phr-sphr-professional-in-human-resources-certification-study-guide-kindle.pdf
    • http://www.gorillawalker.com/neurosurgical-treatments-for-psychiatric-disorders.pdf
    • http://www.gorillawalker.com/history-of-early-christian-literature-phoenix-books.pdf
    • http://www.gorillawalker.com/the-american-bureaucracy-nelson-hall-series-in-political-science.pdf
    • http://www.gorillawalker.com/my-fingernails-grow-tell-me-why-cherry-lake.pdf
    • http://www.gorillawalker.com/proofs-without-words-ii-more-exercises-in-visual-thinking-classroom.pdf
    • http://www.gorillawalker.com/diet-shatkarmas-and-amaroli-yogic-nutrition-cleansing-for-health-and.pdf
    • http://www.gorillawalker.com/american-welding-society-welding-handbook-section-1-fundamentals-of-welding.pdf
    • http://www.gorillawalker.com/portrait-photography-learn-to-shoot-portraits-that-make-you-look.pdf
    • http://www.gorillawalker.com/bimbo-maker-8.pdf
    • http://www.gorillawalker.com/circle-of-madness-on-being-insane-and-institutional-in-america.pdf
    • http://www.gorillawalker.com/network-analysis-with-applications-4th-edition.pdf
    • http://www.gorillawalker.com/the-science-of-financial-market-trading.pdf
    • http://www.gorillawalker.com/lisa-leslie-www-women-who-win.pdf
    • http://www.gorillawalker.com/mara-of-the-celts-eros-graphic-novel-series.pdf
    • http://www.gorillawalker.com/signs-and-symbols-around-the-world.pdf
    • http://www.gorillawalker.com/pisa-untapped-skills-realising-the-potential-of-immigrant-students.pdf
    • http://www.gorillawalker.com/vintage-garden-mini.pdf
    • http://www.gorillawalker.com/the-new-gilded-age-the-critical-inequality-debates-of-our.pdf
    • http://www.gorillawalker.com/violin-concerto-no-2-op-44-orchestra-score-parts-bass.pdf
    • http://www.gorillawalker.com/an-elementary-introduction-to-stochastic-interest-rate-modeling-2nd-edition.pdf
    • http://www.gorillawalker.com/tales-from-the-dodger-dugout.pdf
    • http://www.gorillawalker.com/aristotle-s-contribution-to-the-practice-and-theory-of-historiography.pdf
    • http://www.gorillawalker.com/dear-sisters-dispatches-from-the-women-s-liberation-movement.pdf
    • http://www.gorillawalker.com/elementary-and-intermediate-algebra-books-a-la-carte-edition-3rd.pdf
    • http://www.gorillawalker.com/visual-c-5-the-complete-reference-complete-reference-series.pdf
    • http://www.gorillawalker.com/cheating-confessions-of-your-gay-boyfriend.pdf
    • http://www.gorillawalker.com/doctrina-de-iureiurando-e-genuinis-legum-et-antiquitatis-fontibus-illustrata.pdf
    • http://www.gorillawalker.com/psychoneuroimmunology-second-edition.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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