Malicious PDF — malware analysis report

Static analysis result for SHA-256 da058f1f8c74ffbf…

MALICIOUS

PDF

43.4 KB Created: 2018-12-15 08:59:16 +03:00 Authoring application: Adobe Illustrator CS2 (via Adobe PDF library 7.77)
MD5: 69e8a86c763e562c2f68fc26fb219668 SHA-1: ab6210d1ac3e90ad6ca0a3a61b7d3e1d17f9f85a SHA-256: da058f1f8c74ffbfc5dfd7929bd2685cc27e054bb2f5d79537e3df97a5868233
60 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file exhibits a critical heuristic firing for a link farm, containing 32 embedded URLs pointing to external PDF documents hosted on www.gorillawalker.com. This suggests a tactic to manipulate search engine rankings or to distribute further malicious content. No scripts were extracted, and the document body was heavily obfuscated, limiting further analysis of the specific lure. The primary attack pattern involves leveraging these embedded links.

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/standard-catalog-of-mexican-coins-paper-money-stocks-bonds-and.pdf
    • http://www.gorillawalker.com/children-s-photographic-reference-world-atlas.pdf
    • http://www.gorillawalker.com/by-sheree-raye-comer-delmar-s-critical-care-nursing-care.pdf
    • http://www.gorillawalker.com/my-shining-bible.pdf
    • http://www.gorillawalker.com/spatial-reasoning-in-the-early-years-principles-assertions-and-speculations.pdf
    • http://www.gorillawalker.com/the-cevennes-journal-notes-on-a-journey-through-the-french.pdf
    • http://www.gorillawalker.com/federal-rules-of-evidence-2012-2013-with-evidence-map.pdf
    • http://www.gorillawalker.com/noise-and-vibration-analysis-signal-analysis-and-experimental-procedures.pdf
    • http://www.gorillawalker.com/fisheries-oceanography-and-ecology.pdf
    • http://www.gorillawalker.com/a-supply-chain-logistics-program-for-warehouse-management-series-on.pdf
    • http://www.gorillawalker.com/the-inconvenient-child-an-abandoned-australian-child-struggles-to-survive.pdf
    • http://www.gorillawalker.com/psoriasis-facts-and-home-remedies-kindle-edition.pdf
    • http://www.gorillawalker.com/life-changing-love-moving-god-s-love-from-your-head.pdf
    • http://www.gorillawalker.com/applications-of-synthetic-methods-in-organic-chemistry-macmillan-monographs-in.pdf
    • http://www.gorillawalker.com/the-wiley-guide-to-managing-projects.pdf
    • http://www.gorillawalker.com/instructor-s-guide-essentials-in-hospice-and-palliative-care.pdf
    • http://www.gorillawalker.com/how-to-draft-bills-clients-rush-to-pay.pdf
    • http://www.gorillawalker.com/a-street-in-marrakech.pdf
    • http://www.gorillawalker.com/risk-liability-and-malpractice-what-every-plastic-surgeon-needs-to.pdf
    • http://www.gorillawalker.com/behind-the-mask-of-the-horror-actor.pdf
    • http://www.gorillawalker.com/articulating-design-thinking.pdf
    • http://www.gorillawalker.com/secret-letters-the-fourth-story-from-corsets-and-cravings-a.pdf
    • http://www.gorillawalker.com/ceramic-cutting-tools-materials-development-and-performance.pdf
    • http://www.gorillawalker.com/dhammapada-buddhist-classics-series.pdf
    • http://www.gorillawalker.com/in-the-still-of-the-night-grace-favor-mysteries-no.pdf
    • http://www.gorillawalker.com/literature-and-the-encounter-with-god-in-post-reformation-england.pdf
    • http://www.gorillawalker.com/the-best-of-the-bruce-trail-conservation-ontario.pdf
    • http://www.gorillawalker.com/santa-fe-trail.pdf
    • http://www.gorillawalker.com/the-oyster-volume-5-kindle-edition.pdf
    • http://www.gorillawalker.com/scanners-5.pdf
    • http://www.gorillawalker.com/special-artists-handbook-art-activities-and-adaptive-aids-for-handicapped.pdf
    • http://www.gorillawalker.com/across-a-deadly-field-the-war-in-the-east-american.pdf
    • http://www.gorillawalker.com/aa-words-two-anti-object-the-dissolution-and-disintegration-of.pdf
    • http://www.gorillawalker.com/faultlines-debating-the-issues-in-american-politics-third-edition.pdf
    • http://www.gorillawalker.com/concrete-its-use-in-building-and-the-construction-of-concrete.pdf
    • http://www.gorillawalker.com/don-t-wake-the-baby-all-aboard-picture-reader.pdf
    • http://www.gorillawalker.com/raspberry-pi-cookbook.pdf
    • http://www.gorillawalker.com/hunted-through-central-asia.pdf
    • http://www.gorillawalker.com/you-herd-me-i-ll-say-it-if-nobody-else.pdf
    • http://www.gorillawalker.com/in-search-of-the-maquis-rural-resistance-in-southern-france.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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