Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff4b7ca91e7ce877…

MALICIOUS

PDF

43.4 KB Created: 2018-12-14 21:22:20 +03:00 Authoring application: Adobe InDesign CS2_J (4.0.5) (via Adobe PDF Library 7.0)
MD5: 6955547d520b5e0e506c12e395ee8a2d SHA-1: ae717a8383a8ee7bb4b7786266a5c2dc14738f62 SHA-256: ff4b7ca91e7ce877e6e195072d90e58bf2a169bc80d45dd259ec6c15d33d0bc7
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 exhibits a large number of external links, suggesting a link farm or SEO manipulation tactic. The embedded URLs point to a single domain, 'gorillawalker.com', and are structured as PDF files with descriptive titles. No scripts were extracted, and the document body was heavily truncated, limiting further analysis of the specific lure. The primary attack pattern appears to be the distribution of numerous linked PDFs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8683

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/psalms-to-soothe-a-woman-s-heart.pdf
    • http://www.gorillawalker.com/the-rough-guide-to-hungary-6-rough-guide-travel-guides.pdf
    • http://www.gorillawalker.com/die-deutsche-nation-beobachtungen-zur-politischen-propaganda-des-ausgehenden-15.pdf
    • http://www.gorillawalker.com/trabajo-en-equipo-en-el-futbol-americano-huddle-up-football.pdf
    • http://www.gorillawalker.com/dear-nell-the-true-story-of-the-haven-sisters-kindle.pdf
    • http://www.gorillawalker.com/solar-serendipity-the-corona-chronicles-kindle-edition.pdf
    • http://www.gorillawalker.com/klinikleitfaden-psychiatrie-psychotherapie-german-edition-kindle-edition.pdf
    • http://www.gorillawalker.com/the-grotto-berg-two-novellas.pdf
    • http://www.gorillawalker.com/pale-male-citizen-hawk-of-new-york-city.pdf
    • http://www.gorillawalker.com/life-on-an-ocean-planet.pdf
    • http://www.gorillawalker.com/trial-by-trail-a-journey-from-georgia-to-maine.pdf
    • http://www.gorillawalker.com/minecraft-ultimate-beginners-handbook-ultimate-minecraft-guides-minecraft-books-for.pdf
    • http://www.gorillawalker.com/recovering-from-divorce-finding-peace-and-happiness.pdf
    • http://www.gorillawalker.com/hollywood-babylon-the-legendary-underground-classic-of-hollywood-s-darkest.pdf
    • http://www.gorillawalker.com/to-touch-a-wild-dolphin.pdf
    • http://www.gorillawalker.com/the-adornment-of-the-spiritual-marriage-the-sparkling-stone-the.pdf
    • http://www.gorillawalker.com/hollywood-lighting-from-the-silent-era-to-film-noir-film.pdf
    • http://www.gorillawalker.com/understanding-child-abuse-and-neglect-8th-edition-edition-8-by.pdf
    • http://www.gorillawalker.com/historia-de-la-ciudad-de-alcala-de-henares-antigua-compluto.pdf
    • http://www.gorillawalker.com/language-and-learning-in-renaissance-italy-selected-articles-collected-studies.pdf
    • http://www.gorillawalker.com/maghella-n-26-e-primavera-spogliatevi-bambine-italian-edition.pdf
    • http://www.gorillawalker.com/queen-of-queen-street-the-performance-series.pdf
    • http://www.gorillawalker.com/collins-complete-irish-wildlife-collins-complete-guide.pdf
    • http://www.gorillawalker.com/indivisible.pdf
    • http://www.gorillawalker.com/advancing-public-management-new-developments-in-theory-methods-and-practice.pdf
    • http://www.gorillawalker.com/sequins-secrets-and-silver-linings-threads.pdf
    • http://www.gorillawalker.com/once-upon-a-plaid-spirit-of-the-highlands.pdf
    • http://www.gorillawalker.com/an-introduction-to-roman-religion.pdf
    • http://www.gorillawalker.com/jealousy-strange-angels-book-3.pdf
    • http://www.gorillawalker.com/the-marriage-blessing-workbook-28-days-to-a-blessed-marriage.pdf
    • http://www.gorillawalker.com/don-quijote-de-la-mancha-edicion-del-iv-centenario-spanish.pdf
    • http://www.gorillawalker.com/pranotherapy-the-origins-of-polarity-therapy-and-european-neuromuscular-technique.pdf
    • http://www.gorillawalker.com/candy-won-t-behave-volume-3.pdf
    • http://www.gorillawalker.com/coastal-groundwater-system-changes-in-response-to-large-scale-land.pdf
    • http://www.gorillawalker.com/adagio-and-rondo-for-tenor-saxophone-and-piano-by-francois.pdf
    • http://www.gorillawalker.com/color-atlas-and-synopsis-of-clinical-ophthalmology-wills-eye-institute.pdf
    • http://www.gorillawalker.com/educating-deaf-students-from-research-to-practice.pdf
    • http://www.gorillawalker.com/alcoholics-anonymous-second-edition-2nd-15th-printing-new-revised-edition.pdf
    • http://www.gorillawalker.com/kamala-das-and-her-poetry.pdf
    • http://www.gorillawalker.com/criminal-profiling-victimology-kindle-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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