Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0c7907a690e3e31…

MALICIOUS

PDF

43.2 KB Created: 2019-03-17 09:40:07 +03:00 Authoring application: CorelDRAW X5 (via Corel PDF Engine Version 15.1.0.588)
MD5: 5034e578273b0ac7eb17b753d320d35c SHA-1: bb5b9068e05683ac218ff1df716ceaa1a56c4407 SHA-256: a0c7907a690e3e3103e82108ecd0c3fab0751e98d2cd79d71c62065332e4fe73
90 Risk Score

Malware Insights

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

The PDF was flagged by a machine learning classifier and contains a large number of embedded links to external PDF files, suggesting a link farm or content distribution tactic. The primary heuristic indicates a 'PDF_SEO_LINK_FARM' with 32 external links, the first being http://www.gorillawalker.com/the-ten-pound-plant-grow-marijuana-with-ten-pound-harvests.pdf. The document body is heavily obfuscated and does not provide clear textual clues, but the structure and link farm heuristic strongly suggest a malicious intent, likely related to SEO spam or redirecting users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8173

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/the-ten-pound-plant-grow-marijuana-with-ten-pound-harvests.pdf
    • http://www.gorillawalker.com/marauder-kindle-edition.pdf
    • http://www.gorillawalker.com/treacherous-foundations-betrayal-and-collective-identity-in-early-spanish-epic.pdf
    • http://www.gorillawalker.com/emeralds-kindle-edition.pdf
    • http://www.gorillawalker.com/life-s-dominion.pdf
    • http://www.gorillawalker.com/validez-de-las-escrituras-p.pdf
    • http://www.gorillawalker.com/the-virtual-window-from-alberti-to-microsoft.pdf
    • http://www.gorillawalker.com/the-norton-anthology-of-english-literature-the-major-authors-9th.pdf
    • http://www.gorillawalker.com/scarred-experiment-s-with-violence-in-gujrat.pdf
    • http://www.gorillawalker.com/the-assyrian-dictionary-p-vol-12.pdf
    • http://www.gorillawalker.com/wet-moon-vol-2-unseen-feet.pdf
    • http://www.gorillawalker.com/fast-easy-way-to-learn-a-language.pdf
    • http://www.gorillawalker.com/manichean-debate-works-of-saint-augustine.pdf
    • http://www.gorillawalker.com/the-founders-key-the-divine-and-natural-connection-between-the.pdf
    • http://www.gorillawalker.com/ukraine-belorussia-russia-map-european-road-maps-hungarian-edition.pdf
    • http://www.gorillawalker.com/seven-orange-pumpkins-board-book.pdf
    • http://www.gorillawalker.com/the-american-nation-a-history-of-the-united-states-combined.pdf
    • http://www.gorillawalker.com/america-s-top-101-jobs-for-people-without-a-four.pdf
    • http://www.gorillawalker.com/cnc-a-first-look-primer.pdf
    • http://www.gorillawalker.com/bahrain-political-development-in-a-modernizing-society.pdf
    • http://www.gorillawalker.com/jan-fabre-stigmata-actions-performances-1976-2013.pdf
    • http://www.gorillawalker.com/sailing-back-in-time-a-nostalgic-voyage-on-canada-s.pdf
    • http://www.gorillawalker.com/gentleman-jim-and-the-great-john-l.pdf
    • http://www.gorillawalker.com/seaplane-rating-basics-kindle-edition.pdf
    • http://www.gorillawalker.com/365-sailboats-ports-call-cal-1997.pdf
    • http://www.gorillawalker.com/smoke-a-global-history-of-smoking.pdf
    • http://www.gorillawalker.com/chocolate-i-know-that.pdf
    • http://www.gorillawalker.com/punk-rock-dad-no-rules-just-real-life-punk-rock.pdf
    • http://www.gorillawalker.com/a-glimpse-of-iraq.pdf
    • http://www.gorillawalker.com/mammalian-anatomy-the-cat.pdf
    • http://www.gorillawalker.com/introduction-to-educational-administration.pdf
    • http://www.gorillawalker.com/oman-politics-and-society-in-the-qaboos-state-columbia-hurst.pdf
    • http://www.gorillawalker.com/molly-pitcher-american-legends.pdf
    • http://www.gorillawalker.com/nepal-the-kingdom-in-the-himalayas.pdf
    • http://www.gorillawalker.com/thirty-years-in-lebanon-and-the-middle-east.pdf
    • http://www.gorillawalker.com/moon-take-a-hike-boston-86-hikes-within-2-hours.pdf
    • http://www.gorillawalker.com/after-the-rights-revolution-reconceiving-the-regulatory-state.pdf
    • http://www.gorillawalker.com/the-new-guitar-big-book-of-hits-50s-60s-guitar.pdf
    • http://www.gorillawalker.com/jfk-has-been-shot-a-parkland-hospital-surgeon-speaks-out.pdf
    • http://www.gorillawalker.com/lose-your-belly-fat-diets-advice-from-the-experts-beverly.pdf
    • http://www.gorillawalker.com/the-norton-anthology-of-english-literature-the-major-authors-9th
    • 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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