Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab8c9b961a40a2b9…

MALICIOUS

PDF

47.9 KB Created: 2019-03-16 12:57:48 +03:00 Authoring application: Adobe InDesign CS5 (7.0) (via Adobe PDF Library 9.9)
MD5: ffd0ef714ac504cc4727b31d9eecb069 SHA-1: cebf56248cbb6540eeb94c552f69b54da6d1fd17 SHA-256: ab8c9b961a40a2b9936e34163c9223fe5351d6c65f432b2bef60e64aa2ae96c3
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious File

The PDF was flagged by a machine learning classifier and contains a large number of embedded links to external PDF files, primarily hosted on www.gorillawalker.com. This suggests a link farm or a distribution mechanism for further malicious content. No scripts were extracted from this sample, and the document body was heavily truncated, limiting further analysis of the immediate user-facing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8868

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/pipers-of-the-highland-regiments-1854-1902-compiled-from-regimental.pdf
    • http://www.gorillawalker.com/in-this-living-room-read-me-what-s-lurking-in.pdf
    • http://www.gorillawalker.com/erotic-romance-a-night-with-andrew-erotic-stories-hot-and.pdf
    • http://www.gorillawalker.com/rs-means-facilities-maintenance-repair-cost-data-means-facilities-maintenance.pdf
    • http://www.gorillawalker.com/round-ronde-letters-gr-1-handwriting-handskrif-english-and-afrikaans.pdf
    • http://www.gorillawalker.com/qi-gong-for-health-and-healing-a-complete-training-course.pdf
    • http://www.gorillawalker.com/yin-and-yang-in-the-english-classroom-teaching-with-popular.pdf
    • http://www.gorillawalker.com/datenqualit-tsmanagement-mit-six-sigma-grundlagen-des-einsatzes-industrieller-qualit.pdf
    • http://www.gorillawalker.com/business-calculus-test-yourself.pdf
    • http://www.gorillawalker.com/flight-and-flying-volume-1.pdf
    • http://www.gorillawalker.com/sexy-little-cheerleaders-2-creaming-the-cheerleading-competition-cheerleading-erotica.pdf
    • http://www.gorillawalker.com/s-ukasaptati-das-indische-papageienbuch-german-edition.pdf
    • http://www.gorillawalker.com/coaching-and-mentoring-at-work-developing-effective-practice-kindle-edition.pdf
    • http://www.gorillawalker.com/iso-9000-quality-systems-auditing.pdf
    • http://www.gorillawalker.com/arch.pdf
    • http://www.gorillawalker.com/the-ethics-of-doping-and-anti-doping-redeeming-the-soul.pdf
    • http://www.gorillawalker.com/will-the-middle-east-implode.pdf
    • http://www.gorillawalker.com/field-guide-to-north-american-trees-western-region.pdf
    • http://www.gorillawalker.com/the-history-of-professional-nursing-in-north-carolina-1902-2002.pdf
    • http://www.gorillawalker.com/koln-radatlas-schonsten-touren-in-und-um-koln-bonn-und.pdf
    • http://www.gorillawalker.com/management-3-0-leading-agile-developers-developing-agile-leaders-addison.pdf
    • http://www.gorillawalker.com/the-farmer-boy-murders.pdf
    • http://www.gorillawalker.com/wit-and-wisdom-of-the-saints-a-year-of-saintly.pdf
    • http://www.gorillawalker.com/the-sun-mercury-and-venus-the-solar-system.pdf
    • http://www.gorillawalker.com/mountain-biking-the-berkshires-regional-mountain-biking-series.pdf
    • http://www.gorillawalker.com/learning-100-language-clues-vocabulary-edl-study-guide-ha-1.pdf
    • http://www.gorillawalker.com/boy-on-a-string-from-cast-off-kid-to-filmmaker.pdf
    • http://www.gorillawalker.com/pokemon-trading-card-game-game-boy-version-prima-s-official.pdf
    • http://www.gorillawalker.com/calisthenics-calisthenics-2-0-the-ultimate-bodyweight-training-for-explosive.pdf
    • http://www.gorillawalker.com/structure-based-drug-discovery-methods-in-molecular-biology.pdf
    • http://www.gorillawalker.com/silver-thaw-a-mystic-creek-novel.pdf
    • http://www.gorillawalker.com/red-earth-and-pouring-rain-a-novel.pdf
    • http://www.gorillawalker.com/study-guide-for-the-practice-of-nursing-research-pageburst-e.pdf
    • http://www.gorillawalker.com/sleepyheads.pdf
    • http://www.gorillawalker.com/the-tao-of-philosophy-alan-watts-love-of-wisdom.pdf
    • http://www.gorillawalker.com/chemistry-of-pyrotechnics-basic-principles-and-theory.pdf
    • http://www.gorillawalker.com/earth-to-mars-anyone-home.pdf
    • http://www.gorillawalker.com/grammar-in-context-basic.pdf
    • http://www.gorillawalker.com/dinner-with-friends-unabridged-audible-audio-edition.pdf
    • http://www.gorillawalker.com/conscientious-objectors-in-israel-citizenship-sacrifice-trials-of-fealty-the.pdf
    • http://www.gorilla
    • 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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