Malicious PDF — malware analysis report

Static analysis result for SHA-256 a05c00c5b266bf1a…

MALICIOUS

PDF

43.7 KB Created: 2018-11-23 21:03:43 +03:00 Authoring application: DITA Open Toolkit (via Apache FOP Version 1.0)
MD5: 3596d81895388d234c9df9ff1a6b69d2 SHA-1: 00d94b172916e19e8f34b23047ebf3aa406e16c6 SHA-256: a05c00c5b266bf1aca35bb0b9d86a9deb41f8cb311bd78d3cf964fb924e5108d
98 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF was flagged by an ML classifier and contains a large number of external links, indicating a potential SEO link farm or distribution mechanism. The 'SE_DOWNLOAD_BUTTON' heuristic suggests a lure to encourage user interaction. While no scripts were extracted, the sheer volume of links and the ML classification strongly suggest malicious intent, likely to drive traffic to malicious sites or download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9171

Heuristics 3

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/whispers-of-moonlight-rocky-mountain-memories-book-2.pdf
    • http://www.gorillawalker.com/debrecen-magyar-varosok-hungarian-edition.pdf
    • http://www.gorillawalker.com/why-do-buses-come-in-threes-the-hidden-mathematics-of.pdf
    • http://www.gorillawalker.com/finite-mathematics-its-applications-hunter-college-edition.pdf
    • http://www.gorillawalker.com/marine-mammals-of-the-world-a-comprehensive-guide-to-their.pdf
    • http://www.gorillawalker.com/report-of-the-consultation-on-management-of-fishing-capacity-shark.pdf
    • http://www.gorillawalker.com/jason-rhoades-collector-s-choice-vol-9-collector-s-choice.pdf
    • http://www.gorillawalker.com/the-relic-seacliff-high-mystery-book-3.pdf
    • http://www.gorillawalker.com/parents-in-a-pressure-cooker-a-guide-to-responsible-loving.pdf
    • http://www.gorillawalker.com/political-parties-in-britain-1783-1867-lancaster-pamphlets.pdf
    • http://www.gorillawalker.com/the-christmas-tree-ship-the-story-of-captain-santa.pdf
    • http://www.gorillawalker.com/bundle-human-relations-4th-coursemate-printed-access-card.pdf
    • http://www.gorillawalker.com/little-frog.pdf
    • http://www.gorillawalker.com/best-hikes-with-dogs-oregon.pdf
    • http://www.gorillawalker.com/introduction-to-the-organization-of-information-kindle-edition.pdf
    • http://www.gorillawalker.com/islamic-humanism.pdf
    • http://www.gorillawalker.com/twenty-million-tons-under-the-sea-the-daring-capture-of.pdf
    • http://www.gorillawalker.com/the-kingdom-of-armenia.pdf
    • http://www.gorillawalker.com/let-s-remember-when-texas-belonged-to-mexico.pdf
    • http://www.gorillawalker.com/super-savings-investing-in-savings-bonds-is-a-smart-way.pdf
    • http://www.gorillawalker.com/kafka-s-the-castle-and-the-critical-imagination-literary-criticism.pdf
    • http://www.gorillawalker.com/the-art-of-ricky-carralero.pdf
    • http://www.gorillawalker.com/luis-de-le-n-the-names-of-christ-classics-of.pdf
    • http://www.gorillawalker.com/entering-grade-1-camp-step-ahead-workbooks.pdf
    • http://www.gorillawalker.com/puzzles-for-you-on-your-birthday-15th-june.pdf
    • http://www.gorillawalker.com/identificacion-de-lutzomyia-spp-diptera-psychodidae-grupo-verrucarum-por-medio.pdf
    • http://www.gorillawalker.com/matteson-mcconnell-s-gerontological-nursing-text-and-e-book-package.pdf
    • http://www.gorillawalker.com/30-day-spending-detox-the-simple-plan-to-save-money.pdf
    • http://www.gorillawalker.com/come-for-dinner-memorable-meals-to-share-with-friends.pdf
    • http://www.gorillawalker.com/lillian-learns-the-hard-way.pdf
    • http://www.gorillawalker.com/hamlet-s-absent-father-princeton-legacy-library.pdf
    • http://www.gorillawalker.com/the-alchemical-mercurius-esoteric-symbol-of-jung-s-life-and.pdf
    • http://www.gorillawalker.com/forex-trading-secrets-little-dirty-secrets-and-weird-but-profitable.pdf
    • http://www.gorillawalker.com/analysis-and-control-of-oilwell-drilling-vibrations-a-time-delay.pdf
    • http://www.gorillawalker.com/sweet-caress.pdf
    • http://www.gorillawalker.com/saddles-and-sin-lonesome-point-texas-book-2-kindle-edition.pdf
    • http://www.gorillawalker.com/how-literature-plays-with-the-brain-the-neuroscience-of-reading.pdf
    • http://www.gorillawalker.com/the-stardust-road-sometimes-i-wonder-the-autobiography-of-hoagy.pdf
    • http://www.gorillawalker.com/life-in-ancient-mesopotamia-peoples-of-the-ancient-world.pdf
    • http://www.gorillawalker.com/precision-landmark-location-for-machine-vision-and-photogrammetry.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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