Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1543aa4999b0c69…

MALICIOUS

PDF

39.4 KB Created: 2018-12-15 20:05:46 +03:00 Authoring application: - (via Acrobat Distiller 4.05 for Windows)
MD5: e5dcaf3bb3489ca9a67976e1c01ab53f SHA-1: 4273fd750415ade519033b4dea7faa3428610a96 SHA-256: e1543aa4999b0c6995425f2b0ee204debcc827eed27b702c88be92f4f7eb6f23
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 to external PDF files, as indicated by the PDF_SEO_LINK_FARM heuristic. The ML_NYX_PDF_MALICIOUS classifier also flagged the document with high confidence. The document body is heavily obfuscated and does not provide clear textual lures, but the sheer volume of links suggests a malicious intent, possibly for SEO spam or to distribute further malware. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9002

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/vanish.pdf
    • http://www.gorillawalker.com/doing-business-and-investing-in-philippines-guide-world-business-investment.pdf
    • http://www.gorillawalker.com/diario-de-navega-o-pela-costa-do-brazil-at-o.pdf
    • http://www.gorillawalker.com/data-warehousing-for-dummies.pdf
    • http://www.gorillawalker.com/foundation-sires-of-the-american-quarter-horse.pdf
    • http://www.gorillawalker.com/revisionist-scholarship-and-modern-irish-politics.pdf
    • http://www.gorillawalker.com/getting-started-in-digital-photography-from-snapshots-to-great-shots.pdf
    • http://www.gorillawalker.com/yoga-for-beginners.pdf
    • http://www.gorillawalker.com/shining-wishes-brighter-than-stars.pdf
    • http://www.gorillawalker.com/futanari-mad-science-futa-on-female-transformation-erotica-kindle-edition.pdf
    • http://www.gorillawalker.com/in-case-of-death-straight-talk-on-washington-wrongful-death.pdf
    • http://www.gorillawalker.com/singled-out-how-singles-are-stereotyped-stigmatized-and-ignored-and.pdf
    • http://www.gorillawalker.com/the-anvil-of-the-world.pdf
    • http://www.gorillawalker.com/neuroanatomy-and-neuropathology-a-clinical-guide-for-neuropsychologists.pdf
    • http://www.gorillawalker.com/boston-sites-and-insights.pdf
    • http://www.gorillawalker.com/el-efecto-compuesto-the-compound-effect-spanish-edition.pdf
    • http://www.gorillawalker.com/numerical-methods-and-computer-programming.pdf
    • http://www.gorillawalker.com/the-lewis-and-clark-journals-abridged-edition-an-american-epic.pdf
    • http://www.gorillawalker.com/the-wreck-of-the-grosvenor-classics-of-naval-fiction.pdf
    • http://www.gorillawalker.com/kerberos-a-network-authentication-system.pdf
    • http://www.gorillawalker.com/advances-in-the-systematics-of-diplopoda-iii-zoo-keys.pdf
    • http://www.gorillawalker.com/meet-your-mind-volume-1-the-interactions-between-instincts-and.pdf
    • http://www.gorillawalker.com/wedding-planning-and-management.pdf
    • http://www.gorillawalker.com/oliver-cromwell-god-s-warrior-and-the-english-revolution-british.pdf
    • http://www.gorillawalker.com/soldier-of-sidon.pdf
    • http://www.gorillawalker.com/physiological-control-systems-analysis-simulation-and-estimation.pdf
    • http://www.gorillawalker.com/dump-dinners-crock-pot-don-t-spend-your-free-time.pdf
    • http://www.gorillawalker.com/essentials-of-anorectal-surgery.pdf
    • http://www.gorillawalker.com/krasnye-fonari-akterskaeiia-kniga-russian-edition.pdf
    • http://www.gorillawalker.com/women-and-empowerment-strategies-for-increasing-autonomy-education-policy-perspectives.pdf
    • http://www.gorillawalker.com/six-etudes-op-52-kalmus-edition.pdf
    • http://www.gorillawalker.com/ground-penetrating-radar-iee-radar-sonar-navigation-and-avionics-series.pdf
    • http://www.gorillawalker.com/quick-fat-burning-meals-to-reach-your-peak-performance-preparation.pdf
    • http://www.gorillawalker.com/the-kansas-city-medical-index-lancet-v-10-no-4.pdf
    • http://www.gorillawalker.com/point-blank-alex-rider-adventure.pdf
    • http://www.gorillawalker.com/maquillaje-teen-un-mundo-de-color-seducci-n-y-fantas.pdf
    • http://www.gorillawalker.com/prince-pinocchio.pdf
    • http://www.gorillawalker.com/moonwatcher-s-memoir-a-diary-of-2001-a-space-odyssey.pdf
    • http://www.gorillawalker.com/exiles-at-home-australian-women-writers-1925-1945-a-r.pdf
    • http://www.gorillawalker.com/fear-falling-in-love-with-an-alpha-billionaire.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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