Malicious PDF — malware analysis report

Static analysis result for SHA-256 a25284b8561b8062…

MALICIOUS

PDF

43.8 KB Created: 2018-12-15 08:11:14 +03:00 Authoring application: DITA Open Toolkit (via Apache FOP Version 1.0)
MD5: 8fca3a243769adb10606108a73a17f8d SHA-1: cc76f98b5dfeb2f4a71ba4bacc5f0b897e239c4e SHA-256: a25284b8561b806201ba714a08cdf88c0ed43ac668fe06eb253eba3d99c40067
90 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and contains a large number of embedded URLs pointing to external PDF documents. This behavior is consistent with SEO link farming, where the document is designed to artificially boost the search engine ranking of linked content. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9171

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-very-best-works-at-the-turn-of-the-century.pdf
    • http://www.gorillawalker.com/mizuki-hoshina-girl-a-japanese-edition.pdf
    • http://www.gorillawalker.com/the-marie-selby-botanical-gardens-illustrated-dictionary-of-orchid-genera.pdf
    • http://www.gorillawalker.com/selling-newspaper-space-how-to-develop-local-advertising.pdf
    • http://www.gorillawalker.com/for-the-love-fighting-for-grace-in-a-world-of.pdf
    • http://www.gorillawalker.com/revenue-law-introduction-to-uk-tax-law-income-tax-capital.pdf
    • http://www.gorillawalker.com/the-new-abs-diet.pdf
    • http://www.gorillawalker.com/the-college-tuition-spiral.pdf
    • http://www.gorillawalker.com/course-tutor-for-coremacroeconomics.pdf
    • http://www.gorillawalker.com/mi-primer-ba-l-de-palabras-ba-l-de-palabras.pdf
    • http://www.gorillawalker.com/twelfth-night-dover-thrift-study-edition.pdf
    • http://www.gorillawalker.com/the-bronzed-hawk-audiobook-mp3-audio-unabridged-audio-cd.pdf
    • http://www.gorillawalker.com/molecular-diagnostics.pdf
    • http://www.gorillawalker.com/leadbelly-poems-national-poetry-series.pdf
    • http://www.gorillawalker.com/ask-the-children-what-america-s-children-really-think-about.pdf
    • http://www.gorillawalker.com/civil-justice-in-china-representation-and-practice-in-the-qing.pdf
    • http://www.gorillawalker.com/madame-vestris-and-the-london-stage.pdf
    • http://www.gorillawalker.com/happy-odyssey.pdf
    • http://www.gorillawalker.com/progressive-recorder-method-for-beginner-to-intermediate-students.pdf
    • http://www.gorillawalker.com/michigan-s-historic-games-pastimes-and-sports.pdf
    • http://www.gorillawalker.com/electrician-s-exam-preparation-electrical-theory-national-electrial-code.pdf
    • http://www.gorillawalker.com/ghost-in-the-shell-stand-alone-complex-5-the-ghost.pdf
    • http://www.gorillawalker.com/herons-egrets-and-bitterns-their-biology-and-conservation-in-australia.pdf
    • http://www.gorillawalker.com/white-city-american-poets-continuum.pdf
    • http://www.gorillawalker.com/filling-up-the-afflictions-of-christ-paperback-edition-the-cost.pdf
    • http://www.gorillawalker.com/the-world-through-maps-a-history-of-cartography.pdf
    • http://www.gorillawalker.com/crazes-credulities-and-christian-science.pdf
    • http://www.gorillawalker.com/fifth-grade-reading-comprehension-success-sylvan-workbooks-language-arts-workbooks.pdf
    • http://www.gorillawalker.com/herobrine-birth-of-a-monster-herobrine-series-book-1-kindle.pdf
    • http://www.gorillawalker.com/new-king-james-version-audio-bible-voice-only.pdf
    • http://www.gorillawalker.com/eternity-s-child-the-golden-lotus-book-1-kindle-edition.pdf
    • http://www.gorillawalker.com/service-and-sport-on-the-tropical-nile-some-records-of.pdf
    • http://www.gorillawalker.com/teaching-mathematics-today-2nd-edition-effective-teaching-in-today-s.pdf
    • http://www.gorillawalker.com/fodor-s-spain-2014-full-color-travel-guide.pdf
    • http://www.gorillawalker.com/in-the-beginning-book-i-the-archangel-jarahmael-and-the.pdf
    • http://www.gorillawalker.com/little-melba-and-her-big-trombone.pdf
    • http://www.gorillawalker.com/ignition-systems-for-gasoline-engines-bosch-technical-instruction.pdf
    • http://www.gorillawalker.com/bundle-today-s-technician-automotive-heating-air-conditioning-4th-bundle.pdf
    • http://www.gorillawalker.com/smolder-signet-eclipse.pdf
    • http://www.gorillawalker.com/harvested-forages.pdf
    • http://www.gorillawalker.com/revenue-la
    • 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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