Malicious PDF — malware analysis report

Static analysis result for SHA-256 99820500dd4cefa1…

MALICIOUS

PDF

45.0 KB Created: 2018-12-15 08:53:13 +03:00 Authoring application: -
MD5: 748e36524915e8d998a4eff89ee668c6 SHA-1: d874523138a1fc1d7d9ed0eba092725484e42a01 SHA-256: 99820500dd4cefa1a15fcbc2c525f94304c47bb3794f6c068a1bf3f0b1d2c348
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links pointing to external PDF files, a technique often used for SEO manipulation or to distribute further malicious content. The ML classifier also flagged this PDF as malicious. No scripts were extracted from this sample, and the document body was heavily obfuscated, limiting further analysis of the specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8812

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/railroad-accident-report-collision-involving-three-consolidated-rail-corporation-freight.pdf
    • http://www.gorillawalker.com/adobe-air-adobe-integrated-runtime-with-ajax-visual-quickpro-guide.pdf
    • http://www.gorillawalker.com/narcocorrido-un-viaje-dentro-de-la-musica-de-drogas-armas.pdf
    • http://www.gorillawalker.com/how-to-watch-television.pdf
    • http://www.gorillawalker.com/the-most-dangerous-game-and-other-stories-of-menace-and.pdf
    • http://www.gorillawalker.com/philip-s-international-school-atlas-philip-s-school-atlases.pdf
    • http://www.gorillawalker.com/passporter-s-walt-disney-world-2014-the-unique-travel-guide.pdf
    • http://www.gorillawalker.com/the-untold-history-of-the-united-states.pdf
    • http://www.gorillawalker.com/finite-element-methods-and-their-applications-scientific-computation.pdf
    • http://www.gorillawalker.com/claudette-colvin-twice-toward-justice-japanese-edition.pdf
    • http://www.gorillawalker.com/natural-homemade-cleaning-recipes-for-beginners-2nd-edition-essential-oil.pdf
    • http://www.gorillawalker.com/india-s-bandit-queen.pdf
    • http://www.gorillawalker.com/animal-girls-a-pet-play-collection.pdf
    • http://www.gorillawalker.com/interactive-cd-rom-to-accompany-physical-geology.pdf
    • http://www.gorillawalker.com/it-s-a-bug-s-life.pdf
    • http://www.gorillawalker.com/nield-gehrig-patient-assessment-tutorials-2e-fundamentals-of-periodontal-instrumentation.pdf
    • http://www.gorillawalker.com/kids-love-tennessee-3rd-edition-your-family-travel-guide-to.pdf
    • http://www.gorillawalker.com/born-evil-or-born-genius-the-leading-cause-of-crime.pdf
    • http://www.gorillawalker.com/reading-comprehension-grade-4.pdf
    • http://www.gorillawalker.com/the-accidental-billionaire-part-4-comfortable-adventures-and-compliant-wenches.pdf
    • http://www.gorillawalker.com/collapse-philosophical-research-and-development-concept-horror-volume-iv.pdf
    • http://www.gorillawalker.com/lego-architecture-the-visual-guide.pdf
    • http://www.gorillawalker.com/gf-pacemaker-economics-third-edition-answer-key-2001c.pdf
    • http://www.gorillawalker.com/peter-skene-ogden-and-the-hudson-s-bay-company-american.pdf
    • http://www.gorillawalker.com/japanese-law.pdf
    • http://www.gorillawalker.com/strategic-communications-for-nonprofits-a-step-by-step-guide-to.pdf
    • http://www.gorillawalker.com/doom-stone.pdf
    • http://www.gorillawalker.com/neuroanatomy-atlas-of-structures-sections-systems-7th-edition.pdf
    • http://www.gorillawalker.com/great-hollywood-movies.pdf
    • http://www.gorillawalker.com/foundations-of-experiental-embryology-2nd-edition.pdf
    • http://www.gorillawalker.com/tales-of-chivalry-and-romance-king-arthur-pendragon-role-play.pdf
    • http://www.gorillawalker.com/arlekinada-pas-de-deux-harp-part-qty-2-a8907.pdf
    • http://www.gorillawalker.com/marcel-dzama-drawings-from-the-bernardi-collection.pdf
    • http://www.gorillawalker.com/hollow-world-dungeons-and-dragons-campaign-set.pdf
    • http://www.gorillawalker.com/dying-city-kindle-edition.pdf
    • http://www.gorillawalker.com/the-man-of-the-house-is-a-cowboy-the-brat.pdf
    • http://www.gorillawalker.com/training-dogs-for-protection-work.pdf
    • http://www.gorillawalker.com/welcome-to-pump-track-nation-how-to-build-and-ride.pdf
    • http://www.gorillawalker.com/the-ludic-city-exploring-the-potential-of-public-spaces.pdf
    • http://www.gorillawalker.com/an-essay-on-the-principle-of-population.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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