Malicious PDF — malware analysis report

Static analysis result for SHA-256 8eb3afdcd3dd6875…

MALICIOUS

PDF

42.4 KB Created: 2018-11-14 11:33:16 +03:00 Authoring application: Adobe InDesign CS2_J (4.0.5) (via Adobe PDF Library 7.0)
MD5: 755053e89345a3adda7f4955756b40ec SHA-1: a2c826eca26d2b631421272b111b96e03abe3ebf SHA-256: 8eb3afdcd3dd6875824b0d5c0adf5f27aee49e653d571cbaba30dd014e5b642e
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs pointing to external PDF files on the same domain, as indicated by the PDF_SEO_LINK_FARM heuristic. This suggests a link farm or a distribution mechanism for other malicious content. The ML_NYX_PDF_MALICIOUS heuristic further supports the malicious nature of the file. No scripts were extracted, and the document body was unreadable, so the primary attack vector is inferred from the link farm.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9027

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/medea-focus-classical-library.pdf
    • http://www.gorillawalker.com/educating-amy.pdf
    • http://www.gorillawalker.com/coordination-compounds-1-gmelin-handbook-of-inorganic-and-organometallic-chemistry.pdf
    • http://www.gorillawalker.com/moonbane.pdf
    • http://www.gorillawalker.com/my-amazing-god-instant-bible-lessons-for-toddlers.pdf
    • http://www.gorillawalker.com/lieutenant-roswell-h-lamson-u-s-navy.pdf
    • http://www.gorillawalker.com/algebraic-geometry.pdf
    • http://www.gorillawalker.com/the-essential-writings-of-dr-edward-bach-bybach.pdf
    • http://www.gorillawalker.com/fundamentals-of-spatial-data-quality-geographical-information-systems-series.pdf
    • http://www.gorillawalker.com/india-countries-around-the-world.pdf
    • http://www.gorillawalker.com/the-big-crocodile-a-song-little-celebrations.pdf
    • http://www.gorillawalker.com/anton-reiser-a-psychological-novel-penguin-classics.pdf
    • http://www.gorillawalker.com/tom-hanks-star-tracks.pdf
    • http://www.gorillawalker.com/coming-up-short-the-comprehensive-history-of-the-nhl-s.pdf
    • http://www.gorillawalker.com/watercolour-landscapes-capturing-light-and-atmosphere.pdf
    • http://www.gorillawalker.com/brc-global-standard-for-consumer-products-issue-2a.pdf
    • http://www.gorillawalker.com/el-diario-del-chavo-del-ocho-spanish-edition.pdf
    • http://www.gorillawalker.com/kennedy-s-last-days-the-assassination-that-defined-a-generation.pdf
    • http://www.gorillawalker.com/chile-1970-73-economic-development-and-its-international-setting-self.pdf
    • http://www.gorillawalker.com/prescription-for-nutritional-healing-practical-a-z-reference-to-drug.pdf
    • http://www.gorillawalker.com/sukuma-labor-songs-from-western-tanzania-we-never-sleep-we.pdf
    • http://www.gorillawalker.com/promoting-normal-birth-research-reflections-and-guidelines-fresh-heart-books.pdf
    • http://www.gorillawalker.com/pevsner-s-architectural-glossary-pevsner-architectural-guides.pdf
    • http://www.gorillawalker.com/discussions-on-ego-identity.pdf
    • http://www.gorillawalker.com/lollipop-switch-gender-swap-fiction-bundle.pdf
    • http://www.gorillawalker.com/pennsylvania-dutch-hex-signs-their-origins-history-usage-and-significance.pdf
    • http://www.gorillawalker.com/comptia-network-rapid-review-exam-n10-005-kindle-edition.pdf
    • http://www.gorillawalker.com/shooting-high-pheasants-in-theory-and-practice.pdf
    • http://www.gorillawalker.com/basic-industrial-electricity.pdf
    • http://www.gorillawalker.com/the-top-one-hundred-chinese-dishes.pdf
    • http://www.gorillawalker.com/alternative-treatment-options-for-chronic-kidney-failure-natural-remedies-for.pdf
    • http://www.gorillawalker.com/internet-resource-guide-for-nurses-and-health-care-professionals-3rd.pdf
    • http://www.gorillawalker.com/a-topological-aperitif.pdf
    • http://www.gorillawalker.com/12-20-5-a-doctor-s-year-in-vietnam-kindle.pdf
    • http://www.gorillawalker.com/lsat-preptest-65-explanations-a-study-guide-for-lsat-65.pdf
    • http://www.gorillawalker.com/trapped-fear-street-no-51.pdf
    • http://www.gorillawalker.com/who-s-afraid-of-adam-smith-how-the-market-got.pdf
    • http://www.gorillawalker.com/the-oxford-dictionary-of-the-christian-church.pdf
    • http://www.gorillawalker.com/elements-of-dental-materials.pdf
    • http://www.gorillawalker.com/insecurity-how-to-overcome-social-anxiety-relationship-jealousy-and-stop.pdf
    • http://www.gorillawalker.com/fundamentals-of-spatial-data-qua
    • 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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