Malicious PDF — malware analysis report

Static analysis result for SHA-256 c91c7e63f4d24c97…

MALICIOUS

PDF

43.5 KB Created: 2018-11-26 20:28:54 +03:00 Authoring application: Microsoft Word (via Acrobat PDFWriter 4.0 para Windows)
MD5: 9f26280387f0a37222f516c388a9aadc SHA-1: 0b3efef5195c222b6fabb52da9c9b747fe899f6b SHA-256: c91c7e63f4d24c9765f659d2d9d7f4974e90614f55e501367eaf47736099a93e
90 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier as malicious. A critical heuristic identified a large number of embedded external links, suggesting a link farm or distribution mechanism. The document body is heavily obfuscated and contains numerous URLs pointing to external PDF files, likely to lure users into clicking them and potentially downloading further malicious content or visiting compromised websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9171

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/rival-a-fall-away-novel-the-fall-away-series.pdf
    • http://www.gorillawalker.com/the-lady-makes-three-siren-menage-amour-41.pdf
    • http://www.gorillawalker.com/a-confederation-of-valor-omnibus.pdf
    • http://www.gorillawalker.com/rebirth-of-the-paraguayan-republic-the-first-colorado-era-1878.pdf
    • http://www.gorillawalker.com/1001-questions-answered-about-insects.pdf
    • http://www.gorillawalker.com/detox-outside-the-box.pdf
    • http://www.gorillawalker.com/gas-liquid-chromatography-of-basic-nitrogen-compounds.pdf
    • http://www.gorillawalker.com/afternoon-tea-muffins-scones-and-breakfast-casseroles-kindle-edition.pdf
    • http://www.gorillawalker.com/addups-my-day-dover-little-activity-books.pdf
    • http://www.gorillawalker.com/dancing-sports-and-my-body.pdf
    • http://www.gorillawalker.com/bloomsbury-illustrated-dictionary-of-information-technology-bloomsbury-illustrated-dictionaries.pdf
    • http://www.gorillawalker.com/judas-maccabaeus-hallelujah-amen-keyboard-organ-or-piano-or-orchestra.pdf
    • http://www.gorillawalker.com/my-healer-bewitched-and-bewildered-volume-3.pdf
    • http://www.gorillawalker.com/of-dooms-and-death-point-crime-the-joslin-de-lay.pdf
    • http://www.gorillawalker.com/the-world-before-snow.pdf
    • http://www.gorillawalker.com/rekonstruktionen-in-der-viszeralchirurgie-schema-und-bildgebung-german-edition.pdf
    • http://www.gorillawalker.com/guam-history-perspectives-volume-one.pdf
    • http://www.gorillawalker.com/wind-turbine-manufacturing-in-the-u-s-developments-and-considerations.pdf
    • http://www.gorillawalker.com/the-running-log.pdf
    • http://www.gorillawalker.com/rubber-vs-glass-nsta-kids-i-wonder-why-series-pb330x11.pdf
    • http://www.gorillawalker.com/bundle-fundamentals-of-financial-management-concise-edition-with-thomson-one.pdf
    • http://www.gorillawalker.com/men-and-women-in-qing-china-gender-in-the-red.pdf
    • http://www.gorillawalker.com/to-rise-in-darkness-revolution-repression-and-memory-in-el.pdf
    • http://www.gorillawalker.com/dynamo-electric-machinery-its-construction-design-and-operation-direct-current.pdf
    • http://www.gorillawalker.com/the-slow-burning-love-of-god-klemp-harold-mahanta-transcripts.pdf
    • http://www.gorillawalker.com/kennedy-half-dollars-folder-starting-2004-official-whitman-coin-folder.pdf
    • http://www.gorillawalker.com/guerrilla-gardening.pdf
    • http://www.gorillawalker.com/bokurano-ours-vol-9-kindle-edition.pdf
    • http://www.gorillawalker.com/the-book-of-looms-a-history-of-the-handloom-from.pdf
    • http://www.gorillawalker.com/marxism-and-literary-history.pdf
    • http://www.gorillawalker.com/a-guide-to-the-passion-100-questions-about-the-passion.pdf
    • http://www.gorillawalker.com/dr-jekyll-and-mr-hyde-a-kaplan-sat-score-raising.pdf
    • http://www.gorillawalker.com/le-sultan-misapouf-et-la-princesse-grisemine-les-m-tamorphoses.pdf
    • http://www.gorillawalker.com/the-hiker-s-hip-pocket-guide-to-the-mendocino-coast.pdf
    • http://www.gorillawalker.com/brazil-its-history-people-natural-productions-etc-primary-source-edition.pdf
    • http://www.gorillawalker.com/pop-celebration-bassoon.pdf
    • http://www.gorillawalker.com/nabre-new-american-bible-revised-edition-quality-paperbound-standard-size.pdf
    • http://www.gorillawalker.com/product-design-for-engineers-activate-learning-with-these-new-titles.pdf
    • http://www.gorillawalker.com/reputations-fade-away.pdf
    • http://www.gorillawalker.com/what-is-a-personality-disorder-2001-isbn-4000233572-japanese-import.pdf
    • http://www.gorillawalker.com/gas-liquid-chromatography-of-basic-nitro
    • 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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