Malicious PDF — malware analysis report

Static analysis result for SHA-256 b7a36a90e108405f…

MALICIOUS

PDF

44.0 KB Created: 2018-12-07 18:27:22 +03:00 Authoring application: DITA Open Toolkit (via Apache FOP Version 1.0)
MD5: 5a2457509c0495a37c60300e027198d2 SHA-1: a1bb9a221f88535e2dbe667622f05326a6bcf621 SHA-256: b7a36a90e108405fb6690a3a8006aba01b8e6b2d3d2e71fff4bf338a18b0af94
90 Risk Score

Malware Insights

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

The PDF was flagged by a critical heuristic for containing a mass external link farm, with 32 links identified. The ML classifier also strongly indicated maliciousness. The document body appears to be malformed or heavily obfuscated, but the presence of numerous links to external PDF files on the same domain suggests a coordinated effort to distribute content or manipulate search engine results, potentially leading to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8859

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/power-against-the-enemy-opposed-to-your-shining.pdf
    • http://www.gorillawalker.com/earthquakes-graphic-natural-disasters.pdf
    • http://www.gorillawalker.com/cable-communication.pdf
    • http://www.gorillawalker.com/macroeconomics-book-only.pdf
    • http://www.gorillawalker.com/la-voz-de-filemon-filemon-s-voice-spanish-edition.pdf
    • http://www.gorillawalker.com/the-dublin-pictorial-guide-and-directory.pdf
    • http://www.gorillawalker.com/nascar-pets-2009-calendar.pdf
    • http://www.gorillawalker.com/poetry-for-young-people-animal-poems.pdf
    • http://www.gorillawalker.com/eight-chirurgical-treatises-on-these-followings-heads-viz-i-of.pdf
    • http://www.gorillawalker.com/mae-lee-book-6-sexy-fun-asian-model-kindle-edition.pdf
    • http://www.gorillawalker.com/bibliographies-for-biblical-research-new-testament-series-the-gospel-of.pdf
    • http://www.gorillawalker.com/titanic-a-survivor-s-account-of-incredible-loss-and-human.pdf
    • http://www.gorillawalker.com/rigby-pm-coleccion-individual-student-edition-magenta-basicos-magenta-mi.pdf
    • http://www.gorillawalker.com/medical-jurisprudence-of-insanity-or-forensic-psychiatry-with-an-exhaustive.pdf
    • http://www.gorillawalker.com/anyone-can-whistle.pdf
    • http://www.gorillawalker.com/robot-invasion-7-cool-and-easy-robot-projects.pdf
    • http://www.gorillawalker.com/politics-of-truth-from-marx-to-foucault.pdf
    • http://www.gorillawalker.com/sweeney-todd-the-graphic-novel-original-text-the-demon-barber.pdf
    • http://www.gorillawalker.com/adriana-lecouvreur-act-i-duetto-soprano-tenor-adriana-maurizio-bassoon.pdf
    • http://www.gorillawalker.com/the-soul-collector.pdf
    • http://www.gorillawalker.com/declaration-of-relevant-interests-when-communicating-with-ministers-2nd-report.pdf
    • http://www.gorillawalker.com/black-decker-the-complete-guide-to-treehouses-2nd-edition-design.pdf
    • http://www.gorillawalker.com/tacitus-the-annals-of-imperial-rome.pdf
    • http://www.gorillawalker.com/walk-historic-halifax-walking-guide-to-an-historic-capital-maritime.pdf
    • http://www.gorillawalker.com/english-step-by-step-with-pictures.pdf
    • http://www.gorillawalker.com/torch-is-passed-associated-press-story-of-the-death-of.pdf
    • http://www.gorillawalker.com/sprout-bible-thirty-four-favorite-bible-stories-for-kids-sprout.pdf
    • http://www.gorillawalker.com/len-cabral-s-storytelling-book.pdf
    • http://www.gorillawalker.com/the-sage-handbook-of-social-network-analysis.pdf
    • http://www.gorillawalker.com/basusu-jennie-book-2-kindle-edition.pdf
    • http://www.gorillawalker.com/welding-with-children-stories-1st-first-edition-by-gautreaux-tim.pdf
    • http://www.gorillawalker.com/bonhoeffer-on-the-christian-life-from-the-cross-for-the.pdf
    • http://www.gorillawalker.com/6-lieder-op-56-die-heiligen-drei-k-nige-aus.pdf
    • http://www.gorillawalker.com/ooh-la-la-max-in-love-picture-puffin.pdf
    • http://www.gorillawalker.com/national-geographic-affghanistan-pakistan.pdf
    • http://www.gorillawalker.com/the-signet-classic-book-of-southern-short-stories-signet-classics.pdf
    • http://www.gorillawalker.com/blackjack-tome-4.pdf
    • http://www.gorillawalker.com/godefroi-de-buillon-volume-x-of-the-old-french-crusade.pdf
    • http://www.gorillawalker.com/comfort-for-those-who-mourn-paperback.pdf
    • http://www.gorillawalker.com/my-shepherd-will-supply-my-need-keyboard-sheet-music.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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