Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e8aa137316cc17a…

MALICIOUS

PDF

44.3 KB Created: 2019-03-16 15:43:00 +03:00 Authoring application: Writer (via LibreOffice 4.2)
MD5: a2432309a33600e744a2cef06f07a2ae SHA-1: f199c5ad9e38fce3f523e88aa74f8f4c4b60fa73 SHA-256: 1e8aa137316cc17a3b3d828634fd488000e7fc510b1ced73eefadfe8ca831813
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 embedded external links, indicating a potential link farm or distribution mechanism. The primary attack pattern observed is the mass embedding of URLs, likely to direct users to other malicious content or websites. No scripts were extracted, and the document body was heavily obfuscated, limiting further analysis of the specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9007

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/through-the-woods-a-journey-through-america-s-forests.pdf
    • http://www.gorillawalker.com/flute-music-by-female-composers-13-pieces-for-flute-piano.pdf
    • http://www.gorillawalker.com/the-art-of-kiki-s-delivery-service-a-film-by.pdf
    • http://www.gorillawalker.com/revolution-in-print-the-press-in-france-1775-1800.pdf
    • http://www.gorillawalker.com/princess-talia-the-carnal-adventures-of-chad-and-mary-vol.pdf
    • http://www.gorillawalker.com/goode-s-world-atlas-physical-political-economic.pdf
    • http://www.gorillawalker.com/tough-hand.pdf
    • http://www.gorillawalker.com/day-by-day-with-people-of-the-bible-reflections-for.pdf
    • http://www.gorillawalker.com/reflexology-advanced-foot-reflexology-massage-techniques-for-stress-and-tension.pdf
    • http://www.gorillawalker.com/petit-larousse-de-la-cuisine-recett-french-edition.pdf
    • http://www.gorillawalker.com/high-school-gps-help-your-child-navigate-to-academic-success.pdf
    • http://www.gorillawalker.com/mistle-child-the-undertaken-trilogy.pdf
    • http://www.gorillawalker.com/jump-start-your-business-brain.pdf
    • http://www.gorillawalker.com/blank-spots-on-the-map-the-dark-geography-of-the.pdf
    • http://www.gorillawalker.com/tecumseh-and-the-quest-for-indian-leadership-library-of-american.pdf
    • http://www.gorillawalker.com/the-cheyenne-indians-their-history-and-lifeways-edited-and-illustrated.pdf
    • http://www.gorillawalker.com/the-route-to-power-in-nigeria-a-dynamic-engagement-option.pdf
    • http://www.gorillawalker.com/lazarus-volume-1-tp.pdf
    • http://www.gorillawalker.com/barga-tuscany-a-walking-tour-of-the-historic-center-of.pdf
    • http://www.gorillawalker.com/million-dollar-quartet-piano-vocal-selections.pdf
    • http://www.gorillawalker.com/ascended-masters-oracle-cards-44-card-deck-and-guidebook.pdf
    • http://www.gorillawalker.com/cat-breeds-the-simple-and-easy-guide-to-matching-the.pdf
    • http://www.gorillawalker.com/the-hair-in-black-women.pdf
    • http://www.gorillawalker.com/the-dark-tower-boxed-set-books-1-4.pdf
    • http://www.gorillawalker.com/motivational-interviewing-and-stages-of-change-integrating-best-practices-for.pdf
    • http://www.gorillawalker.com/essentials-of-intellectual-property-essentials-series.pdf
    • http://www.gorillawalker.com/avancemos-level-4-spanish-edition.pdf
    • http://www.gorillawalker.com/flushed-how-the-plumber-saved-civilization.pdf
    • http://www.gorillawalker.com/the-psychology-of-philanthropy-the-science-behind-giving.pdf
    • http://www.gorillawalker.com/broqueis-literatura-lingua-portuguesa-livro-1-portuguese-edition-kindle-edition.pdf
    • http://www.gorillawalker.com/the-everything-glycemic-index-cookbook-300-appetizing-recipes-to-keep.pdf
    • http://www.gorillawalker.com/jade-mirror-of-the-four-unknowns.pdf
    • http://www.gorillawalker.com/fourier-analysis-graduate-studies-in-mathematics.pdf
    • http://www.gorillawalker.com/waste-lands-the-dark-tower.pdf
    • http://www.gorillawalker.com/magnetic-kama-sutra-a-naughty-sculpture-kit.pdf
    • http://www.gorillawalker.com/the-no-cook-skinny-delicious-nutritious-overnight-oats-in-a.pdf
    • http://www.gorillawalker.com/the-franchise-joey-toranetti-book-2.pdf
    • http://www.gorillawalker.com/herbert-spencer-a-primary-and-secondary-bibliography-garland-reference-library.pdf
    • http://www.gorillawalker.com/2006-essential-guide-to-air-travel-security-transportation-security-administration.pdf
    • http://www.gorillawalker.com/atelier-confectionery-bonbons-marshmallows-toffees-lollipops-licorice.pdf
    • http://www.gorillawalker.com/reflexology-advanced-foot-reflexology-massage-techni
    • 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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