Malicious PDF — malware analysis report

Static analysis result for SHA-256 87665aa84799df81…

MALICIOUS

PDF

43.5 KB Created: 2019-04-07 18:02:36 +03:00 Authoring application: Acrobat Distiller 7.0.5 (Windows)
MD5: 6614ec3df5d3d9f6b152c4baffa3b183 SHA-1: 812d0066d29e340900394df07c2bd9d3c07a42aa SHA-256: 87665aa84799df8190b3a40c11da44673370e4beda965e7b6376ca63d41df701
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment

The PDF contains a mass external link farm, directing users to 32 different PDF files hosted on www.gorillawalker.com. This technique is often used to distribute malicious content or to engage in SEO poisoning to manipulate search engine results. The ML classifier also flagged this PDF as malicious with high confidence.

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/lonely-planet-turquia-spanish-edition.pdf
    • http://www.gorillawalker.com/arizona-juvenile-law-baldwin-s-handbook-series.pdf
    • http://www.gorillawalker.com/the-slim-switch-a-complete-weight-control-system-become-slim.pdf
    • http://www.gorillawalker.com/vocabulary-in-context-for-the-common-core-standards-reproducible-grade.pdf
    • http://www.gorillawalker.com/line-of-dominoes-cascading-poems-by-the-5th-graders-of.pdf
    • http://www.gorillawalker.com/california-real-estate-audio-exam-guide.pdf
    • http://www.gorillawalker.com/popular-education-and-social-change-in-latin-america.pdf
    • http://www.gorillawalker.com/syriac-modern-bible-large-black-hardcover-bible-m083-with-footnotes.pdf
    • http://www.gorillawalker.com/las-aventuras-de-sherlock-holmes-los-misterios-de-sherlock-holmes.pdf
    • http://www.gorillawalker.com/castro-s-secrets-cuban-intelligence-the-cia-and-the-assassination.pdf
    • http://www.gorillawalker.com/the-sissy-submits.pdf
    • http://www.gorillawalker.com/consultations-in-dermatology-studies-of-orphan-and-unique-patients.pdf
    • http://www.gorillawalker.com/the-deadly-storm-the-battle-beyond-volume-2.pdf
    • http://www.gorillawalker.com/bravest-warriors-vol-4.pdf
    • http://www.gorillawalker.com/colecc-on-de-historiadores-de-chile-y-documentos-relativos-a.pdf
    • http://www.gorillawalker.com/the-ultimate-guide-for-social-security-disability-benefits-kindle-edition.pdf
    • http://www.gorillawalker.com/the-wall-street-mba-second-edition.pdf
    • http://www.gorillawalker.com/cell-lipids-volume-40-current-topics-in-membranes.pdf
    • http://www.gorillawalker.com/the-theory-of-transformations-in-metals-and-alloys-v-1.pdf
    • http://www.gorillawalker.com/lonesome-october-a-cat-s-halloween.pdf
    • http://www.gorillawalker.com/les-choristes-bande-originale-du-film-french-edition.pdf
    • http://www.gorillawalker.com/secrets-of-millionaire-moms-learn-how-they-turned-great-ideas.pdf
    • http://www.gorillawalker.com/finger-lakes-almanac-a-guide-to-the-natural-year.pdf
    • http://www.gorillawalker.com/conquest.pdf
    • http://www.gorillawalker.com/bucket-list-bars-historic-saloons-pubs-and-dives-of-america.pdf
    • http://www.gorillawalker.com/the-barry-manilow-anthology.pdf
    • http://www.gorillawalker.com/keys-to-great-writing.pdf
    • http://www.gorillawalker.com/introduction-to-numerical-electrostatics-using-matlab.pdf
    • http://www.gorillawalker.com/land-of-a-thousand-dreams-the-emerald-ballad.pdf
    • http://www.gorillawalker.com/historias-de-letras-palabras-y-frases-spanish-edition-kindle-edition.pdf
    • http://www.gorillawalker.com/cocoa-cycles-the-economics-of-cocoa-supply.pdf
    • http://www.gorillawalker.com/the-triple-agent-the-al-qaeda-mole-who-infiltrated-the.pdf
    • http://www.gorillawalker.com/wings-how-to-become-a-military-pilot.pdf
    • http://www.gorillawalker.com/the-diggers-are-coming.pdf
    • http://www.gorillawalker.com/copyright-in-school-libraries-the-library-association-copyright-guides.pdf
    • http://www.gorillawalker.com/national-geographic-magazine-october-1984-volume-166-number-4.pdf
    • http://www.gorillawalker.com/reframe-your-thinking-around-autism-how-the-polyvagal-theory-and.pdf
    • http://www.gorillawalker.com/jarod-s-heart-a-king-brothers-novel-king-brothers-stories.pdf
    • http://www.gorillawalker.com/red-white-and-blood-the-president-s-vampire-3-nathaniel.pdf
    • http://www.gorillawalker.com/modern-environments-and-human-health-revisiting-the-second-epidemiological-transition.pdf
    • http://www.gorillawalker.com/syriac-modern-bible-large-
    • 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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