Malicious PDF — malware analysis report

Static analysis result for SHA-256 bfa4ed9270f51de8…

MALICIOUS

PDF

40.9 KB Created: 2018-11-26 20:05:30 +03:00 Authoring application: FrameMaker 7.0 (via Acrobat Distiller 5.0.5 (Windows); modified using iText® 5.5.4 ©2000-2014 iText Group NV (AGPL-version))
MD5: dc6c8489d2df4d28f9d309407e793701 SHA-1: 9e03825794ca053455c5139e0ebbd8efb3229ca2 SHA-256: bfa4ed9270f51de83370faf83c101fd839c2505d5fe3467b6f71f590d0d666ca
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment

The PDF contains a large number of embedded links pointing to external PDF files, a technique often used for SEO manipulation or to distribute malicious content. The ML classifier also flagged this PDF as malicious. No scripts were extracted, and the document body was heavily obfuscated, preventing a deeper 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/interior-construction-and-detailing-for-designers-and-architects.pdf
    • http://www.gorillawalker.com/harmonizing-yin-and-yang.pdf
    • http://www.gorillawalker.com/macworld-quarkxpress-4-bible.pdf
    • http://www.gorillawalker.com/seeds-of-hope-the-life-and-work-of-patricia-brenninkmeyer.pdf
    • http://www.gorillawalker.com/pantry-stuffers-soup-mixes-using-dehydrated-products.pdf
    • http://www.gorillawalker.com/carriage-of-goods-by-sea.pdf
    • http://www.gorillawalker.com/moon-handbooks-pacific-mexico-including-acapulco-puerto-vallarta-oaxaca-guadalajara.pdf
    • http://www.gorillawalker.com/nero-wolfe-cookbook-1st-edition.pdf
    • http://www.gorillawalker.com/you-never-heard-of-sandy-koufax.pdf
    • http://www.gorillawalker.com/le-tresor-des-cathares-chasseurs-de-secrets-volume-2-french.pdf
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    • http://www.gorillawalker.com/advances-in-reactor-measurement-and-control.pdf
    • http://www.gorillawalker.com/himmelfallskommando-in-sieben-tagen-zum-fallschirmspringer-german-edition-kindle-edition.pdf
    • http://www.gorillawalker.com/iso-7173-1989-furniture-chairs-and-stools-determination-of-strength.pdf
    • http://www.gorillawalker.com/a-theory-of-fairness-and-social-welfare-econometric-society-monographs.pdf
    • http://www.gorillawalker.com/russian-blue.pdf
    • http://www.gorillawalker.com/stick-insect-take-off-bug-books.pdf
    • http://www.gorillawalker.com/the-book-of-jesse-a-story-of-youth-illness-and.pdf
    • http://www.gorillawalker.com/self-sensing-concrete-in-smart-structures.pdf
    • http://www.gorillawalker.com/the-environmental-debate-a-documentary-history-with-timeline-glossary-and.pdf
    • http://www.gorillawalker.com/boogiepop-at-dawn-boogiepop-the-light-novel.pdf
    • http://www.gorillawalker.com/cross-cultural-perspectives-in-human-development.pdf
    • http://www.gorillawalker.com/shbahoth-songs-of-praise-in-the-babylonian-jewish-tradition-from.pdf
    • http://www.gorillawalker.com/the-life-and-times-of-por-little-jimmy.pdf
    • http://www.gorillawalker.com/the-savage-god.pdf
    • http://www.gorillawalker.com/much-ado-about-grubstake.pdf
    • http://www.gorillawalker.com/glengarry-glen-ross.pdf
    • http://www.gorillawalker.com/survivors-of-rome.pdf
    • http://www.gorillawalker.com/uncovering-the-holocaust-the-international-reception-of-night-and-fog.pdf
    • http://www.gorillawalker.com/never-again-good-bye-second-chances-series-1.pdf
    • http://www.gorillawalker.com/the-death-of-outrage-bill-clinton-and-the-assault-on.pdf
    • http://www.gorillawalker.com/white-mountains-waterproof-trail-map-new-hampshire-maine.pdf
    • http://www.gorillawalker.com/the-economics-of-the-european-union-and-the-economies-of.pdf
    • http://www.gorillawalker.com/pastel-step-by-step-artist-s-library-series.pdf
    • http://www.gorillawalker.com/luke-1-1-9-50-concordia-commentary.pdf
    • http://www.gorillawalker.com/passion-and-pathology-in-victorian-fiction.pdf
    • http://www.gorillawalker.com/simply-stairs.pdf
    • http://www.gorillawalker.com/junior-brain-workout.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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