Malicious PDF — malware analysis report

Static analysis result for SHA-256 f1ab6fb14b7cb150…

MALICIOUS

PDF

41.5 KB Created: 2019-04-09 01:14:21 +03:00 Authoring application: Adobe InDesign CC 2014 (Macintosh) (via Adobe PDF Library 11.0)
MD5: 3fabaf8f03cd8abc4632dc39eee134b7 SHA-1: b469e0ef3965ce8e78c0280277221441db92d4c8 SHA-256: f1ab6fb14b7cb150c5846c6ebe4dab150407d6ca80aeace2f011dbd384ad8c40
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs pointing to external PDF files on the same domain. This behavior is indicative of a link farm, often used for SEO manipulation or as a distribution point for malicious content. The ML classifier also flagged this PDF as malicious. 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 0.8242

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/balsamic-vinegars-tradition-technology-trade-kindle-edition.pdf
    • http://www.gorillawalker.com/travellers-prague-3rd-travellers-thomas-cook.pdf
    • http://www.gorillawalker.com/a-guide-to-inclusive-therapy-26-methods-of-respectful-resistance.pdf
    • http://www.gorillawalker.com/kolbe-island-series-books-i-ii-iii.pdf
    • http://www.gorillawalker.com/boganis-letters-from-the-hunt.pdf
    • http://www.gorillawalker.com/invitaci.pdf
    • http://www.gorillawalker.com/we-were-soldiers-once-and-young-ia-drang-battle-that.pdf
    • http://www.gorillawalker.com/memoirs-of-service-afloat-during-the-war-between-the-states.pdf
    • http://www.gorillawalker.com/80-st-johann-salzburger-land-grossarltal-kleinarltal-hochkonig-tennengebirge-1.pdf
    • http://www.gorillawalker.com/portraits-of-mount-st-helens-national-volcanic-monument-from-the.pdf
    • http://www.gorillawalker.com/on-the-art-of-writing-copy-third-edition.pdf
    • http://www.gorillawalker.com/lunar-surface-base-propulsion-system-study-sudoc-nas-1-26.pdf
    • http://www.gorillawalker.com/green-and-clean-getting-started-with-natural-cleaning.pdf
    • http://www.gorillawalker.com/gerontological-supervision-a-social-work-perspective-in-case-management-and.pdf
    • http://www.gorillawalker.com/child-protection.pdf
    • http://www.gorillawalker.com/la-marca-del-lobo-negro-iv-spanish-edition-kindle-edition.pdf
    • http://www.gorillawalker.com/the-vegetarian-werewolf-and-other-stories.pdf
    • http://www.gorillawalker.com/i-can-hear-you-whisper-an-intimate-journey-through-the.pdf
    • http://www.gorillawalker.com/the-infinite-emotions-of-coffee.pdf
    • http://www.gorillawalker.com/airship-city-the-aeropolis-sequence-volume-1.pdf
    • http://www.gorillawalker.com/sex-education-in-schools-essential-viewpoints-set-4.pdf
    • http://www.gorillawalker.com/two-happy-years-in-ceylon.pdf
    • http://www.gorillawalker.com/postcolonial-wales.pdf
    • http://www.gorillawalker.com/wishbone-classic-12-ivanhoe.pdf
    • http://www.gorillawalker.com/blast-off-launching-your-child-to-college-and-beyond.pdf
    • http://www.gorillawalker.com/bodyworld.pdf
    • http://www.gorillawalker.com/the-individual-investor-s-guide-to-the-top-mutual-funds.pdf
    • http://www.gorillawalker.com/monasticism.pdf
    • http://www.gorillawalker.com/dodge-caravan-chrysler-voyager-town-country-2003-thru-2007-haynes.pdf
    • http://www.gorillawalker.com/the-great-spiritual-robbery-abuses-of-religious-ideology-from-jerusalem.pdf
    • http://www.gorillawalker.com/recorder-from-the-beginning-book-1-classic-edition.pdf
    • http://www.gorillawalker.com/understanding-judaism-the-basics-of-deed-and-creed.pdf
    • http://www.gorillawalker.com/competition-in-australian-bookselling.pdf
    • http://www.gorillawalker.com/how-to-eat-right-and-live-longer.pdf
    • http://www.gorillawalker.com/the-great-wall-of-china-arbitrary-borders-kindle-edition.pdf
    • http://www.gorillawalker.com/baiae-the-i-tatti-renaissance-library.pdf
    • http://www.gorillawalker.com/music-cosmology-and-the-politics-of-harmony-in-early-china.pdf
    • http://www.gorillawalker.com/on-merleau-ponty-wadsworth-notes.pdf
    • http://www.gorillawalker.com/the-hidden-story-of-drugs-undercover-story.pdf
    • http://www.gorillawalker.com/the-battle-for-gotham-new-york-in-the-shadow-of.pdf
    • http://www.gorillawalker.com/80-st-jo
    • 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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