Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c00a40daf2df79a…

MALICIOUS

PDF

44.7 KB Created: 2019-04-30 16:26:59 +03:00 Authoring application: Adobe InDesign CS5 (7.0.3) (via Adobe PDF Library 9.9)
MD5: 33dd1c762d06d65c55b3ed5669840b3b SHA-1: 3fa376fa4b4cf91beba82fd2cc57771d84d5fd89 SHA-256: 2c00a40daf2df79a765d2e31e206a27e639d376ec1f5e4c4697f6a55319f2997
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF was flagged by a critical heuristic for containing a mass external PDF link farm, with 32 links identified. The ML classifier also strongly indicated maliciousness. While no scripts were extracted, the sheer volume of outbound links to PDF documents suggests an attempt to manipulate search engine rankings or distribute further malicious content, potentially through a phishing or social engineering vector.

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/brain-games-for-kids-bible-puzzles.pdf
    • http://www.gorillawalker.com/life-in-bright-colors-the-artist-s-secrets-by-maya.pdf
    • http://www.gorillawalker.com/for-the-love-of-letters-the-joy-of-slow-communication.pdf
    • http://www.gorillawalker.com/intimate-china-the-chinese-as-i-have-seen-them-with.pdf
    • http://www.gorillawalker.com/the-billy-joel-keyboard-book-note-for-note-keyboard-transcriptions.pdf
    • http://www.gorillawalker.com/eyewitness-virtual-reality-cd-rom-dinosaur-hunter-win.pdf
    • http://www.gorillawalker.com/chorus-line-a-the-movie-piano-vocal-guitar-series.pdf
    • http://www.gorillawalker.com/inventing-accuracy-a-historical-sociology-of-nuclear-missile-guidance-inside.pdf
    • http://www.gorillawalker.com/the-muslims-of-british-india-cambridge-south-asian-studies.pdf
    • http://www.gorillawalker.com/outlines-of-psychology.pdf
    • http://www.gorillawalker.com/history-and-physical-examination-a-common-sense-approach.pdf
    • http://www.gorillawalker.com/mckenna-s-honor-the-clan-macdougall-series-kindle-edition.pdf
    • http://www.gorillawalker.com/an-edible-history-of-humanity-unabridged-audible-audio-edition.pdf
    • http://www.gorillawalker.com/aerodynamic-holography.pdf
    • http://www.gorillawalker.com/tyrone-and-fermanagh.pdf
    • http://www.gorillawalker.com/rest-part-9-how-to-get-well-then-stay-well.pdf
    • http://www.gorillawalker.com/multiple-flash-photography-off-camera-flash-techniques-for-digital-photographers.pdf
    • http://www.gorillawalker.com/predicate-logic-the-semantic-foundations-of-logic.pdf
    • http://www.gorillawalker.com/earnings-management-and-its-determinants-closing-gaps-in-empirical-accounting.pdf
    • http://www.gorillawalker.com/professional-orchestration-vol-2b-orchestrating-the-melody-within-the-woodwinds.pdf
    • http://www.gorillawalker.com/a-new-kind-of-christianity-ten-questions-that-are-transforming.pdf
    • http://www.gorillawalker.com/aqa-gcse-design-and-technology-product-design.pdf
    • http://www.gorillawalker.com/a-history-of-photography-in-50-cameras-fifty-things-that.pdf
    • http://www.gorillawalker.com/hang-up-the-phone-the-guide-to-getting-over-your.pdf
    • http://www.gorillawalker.com/war-on-the-prairie.pdf
    • http://www.gorillawalker.com/hendrix-the-jimi-hendrix-concerts-authoritative-transcriptions-for-guitar-bass.pdf
    • http://www.gorillawalker.com/transforming-cities-with-transit-transit-and-land-use-integration-for.pdf
    • http://www.gorillawalker.com/why-are-you-picking-on-me-dealing-with-bullies-slim.pdf
    • http://www.gorillawalker.com/the-role-of-identical-component-information-in-visual-tasks-similarity.pdf
    • http://www.gorillawalker.com/the-holocaust-primary-sourcebook.pdf
    • http://www.gorillawalker.com/wicked-wager.pdf
    • http://www.gorillawalker.com/the-transformation-of-turkey-redefining-state-and-society-from-the.pdf
    • http://www.gorillawalker.com/sasanian-jewry-and-its-culture-a-lexicon-of-jewish-and.pdf
    • http://www.gorillawalker.com/the-optimists-good-morning.pdf
    • http://www.gorillawalker.com/becoming-a-coupon-warrior-extreme-couponing-for-newbies-a-step.pdf
    • http://www.gorillawalker.com/complete-encyclopedia-of-the-sas.pdf
    • http://www.gorillawalker.com/transgenerational-family-therapies.pdf
    • http://www.gorillawalker.com/mirabilia-descripta-the-wonders-of-the-east-cambridge-library-collection.pdf
    • http://www.gorillawalker.com/seduced-by-zeus-a-gods-awaken-tale.pdf
    • http://www.gorillawalker.com/master-solos-intermediate-level-clarinet-book-cd-pack.pdf
    • http://www.gorillawalker.com/eyewitness-virtual-reality-cd-ro
    • 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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