Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0f1cefa7a73984b…

MALICIOUS

PDF

43.0 KB Created: 2019-03-17 12:34:18 +03:00 Authoring application: Sejda (Ver. 1.0.0.M6-SNAPSHOT) (via iText 2.1.7 by 1T3XT)
MD5: be1b5e992795daa453c1c2891b72014c SHA-1: dcd26c1fe281be19583306a980ed7b285b4d62f4 SHA-256: b0f1cefa7a73984bc6b1ee78c5df98701e27f81cb32044c0d4d6cb9fd8cbfa6f
90 Risk Score

Malware Insights

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

The PDF was flagged by a machine learning classifier and contains a large number of external links to other PDF files hosted on the domain 'gorillawalker.com'. This behavior is indicative of a link farm, often used for SEO manipulation or to distribute malicious content. No scripts were extracted, and the document body was heavily truncated, limiting further analysis of the specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9181

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/cadillac-desert-the-american-west-and-its-disappearing-water-revised.pdf
    • http://www.gorillawalker.com/gandhi-churchill-the-epic-rivalry-that-destroyed-an-empire-and.pdf
    • http://www.gorillawalker.com/introduction-to-conformal-field-theory-with-applications-to-string-theory.pdf
    • http://www.gorillawalker.com/microsoft-odbc-3-0-software-development-kit-and-programmer-s.pdf
    • http://www.gorillawalker.com/introductory-quantum-chemistry-1st-ed-1st-pr.pdf
    • http://www.gorillawalker.com/performing-environments-site-specificity-in-medieval-and-early-modern-english.pdf
    • http://www.gorillawalker.com/practical-guide-to-business-forecasting.pdf
    • http://www.gorillawalker.com/aluminum-design-manual-2010-set-book-cd.pdf
    • http://www.gorillawalker.com/a-birthday-for-bear-bear-and-mouse.pdf
    • http://www.gorillawalker.com/clovelly-and-hartland-explorer-maps-126-os-explorer-map.pdf
    • http://www.gorillawalker.com/la-inversion-en-productos-inmobiliarios-colecci-n-manuales-de-asesoramiento.pdf
    • http://www.gorillawalker.com/robyn-hood-fight-for-freedom-kindle-edition.pdf
    • http://www.gorillawalker.com/la-guarida-del-leon-spanish-edition.pdf
    • http://www.gorillawalker.com/freshwater-fish-breeds-kindle-edition.pdf
    • http://www.gorillawalker.com/the-clinch-no-holds-barred-fighting.pdf
    • http://www.gorillawalker.com/colloquial-spanish-of-latin-america-2-the-next-step-in.pdf
    • http://www.gorillawalker.com/radio-communication.pdf
    • http://www.gorillawalker.com/fundamentals-of-european-civil-law.pdf
    • http://www.gorillawalker.com/willie-wyld-his-wonderful-voyage-to-the-island-of-zanzibar.pdf
    • http://www.gorillawalker.com/sing-your-heart-out.pdf
    • http://www.gorillawalker.com/using-images-in-late-antiquity.pdf
    • http://www.gorillawalker.com/rising-sun-the-decline-fall-of-the-jap.pdf
    • http://www.gorillawalker.com/the-2002-official-patient-s-sourcebook-on-heroin-dependence-a.pdf
    • http://www.gorillawalker.com/entice-eagle-elite-book-3-kindle-edition.pdf
    • http://www.gorillawalker.com/milan-and-turin-a-complete-guide-to-italy-s-capitals.pdf
    • http://www.gorillawalker.com/john-sinclair-folge-0841-erst-lieb-ich-dich-dann-bei.pdf
    • http://www.gorillawalker.com/book-of-nonsense-containing-edward-lear-s-complete-nonsense-rhymes.pdf
    • http://www.gorillawalker.com/a-practical-guide-to-software-localization-language-international-world-directory.pdf
    • http://www.gorillawalker.com/hanon-for-students-bk-1-6-varied-exercises-from-the.pdf
    • http://www.gorillawalker.com/some-basics-about-skateboards-gemini-series.pdf
    • http://www.gorillawalker.com/the-cuerdale-hoard-and-related-viking-age-silver-and-gold.pdf
    • http://www.gorillawalker.com/madonna-and-me-women-writers-on-the-queen-of-pop.pdf
    • http://www.gorillawalker.com/the-mammoth-hunters-earth-s-children-series.pdf
    • http://www.gorillawalker.com/search-inside-yourself-the-unexpected-path-to-achieving-success-happiness.pdf
    • http://www.gorillawalker.com/mongolia-road-map-by-gizi-map-published-by-gizimap-2005.pdf
    • http://www.gorillawalker.com/songs-of-praise.pdf
    • http://www.gorillawalker.com/union-castle-liners-southampton-to-the-south-african-cape-1946.pdf
    • http://www.gorillawalker.com/learning-autodesk-alias-design-2016-5th-edition.pdf
    • http://www.gorillawalker.com/take-down-the-men-of-the-sisterhood.pdf
    • http://www.gorillawalker.com/the-thief-hope-chest-time-travel-series-book-4-hope.pdf
    • http://www.gorillawalker.com/microsoft-o
    • 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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