Malicious PDF — malware analysis report

Static analysis result for SHA-256 91cc90f25f6740ea…

MALICIOUS

PDF

42.3 KB Created: 2019-04-08 04:53:23 +03:00 Authoring application: Windows PSCRIPT (via Acrobat Distiller 3.01 for Windows)
MD5: 7ddbf9e62434f6b7fa2c97b5f40e1903 SHA-1: b66538adbd399d96384a143a81304cf72ee2f366 SHA-256: 91cc90f25f6740ea0e288d491096f74fceefe4188f93791c381b4c57e7d6bc34
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded external links, as indicated by the PDF_SEO_LINK_FARM heuristic. The ML classifier also flagged this PDF as malicious. While no scripts were extracted, the sheer volume of links suggests an attempt to manipulate search engine results or redirect users to potentially malicious content hosted on the linked domains.

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/action-research-a-guide-for-library-media-specialists.pdf
    • http://www.gorillawalker.com/machine-designers-reference.pdf
    • http://www.gorillawalker.com/heroism-in-the-harry-potter-series-ashgate-studies-in-childhood.pdf
    • http://www.gorillawalker.com/labor-relations-11th-edition.pdf
    • http://www.gorillawalker.com/man-without-a-country-the-message-to-garcia-a-cosy.pdf
    • http://www.gorillawalker.com/100-people-who-made-history.pdf
    • http://www.gorillawalker.com/beauties-and-beasts-the-oryx-multicultural-folktale-series.pdf
    • http://www.gorillawalker.com/encyclopedia-of-the-jewish-diaspora-origins-experiences-and-culture-3.pdf
    • http://www.gorillawalker.com/trespassing-my-sojourn-in-the-halls-of-privilege.pdf
    • http://www.gorillawalker.com/postpartum-depression-vastly-undertreated-despite-prevalence-easily-detectable-brief-article.pdf
    • http://www.gorillawalker.com/the-case-of-the-april-fool-s-frogs-calendar-club.pdf
    • http://www.gorillawalker.com/wireless-writing-in-the-age-of-marconi-electronic-mediations.pdf
    • http://www.gorillawalker.com/human-anatomy-physiology-laboratory-manual-cat-version-12th-edition.pdf
    • http://www.gorillawalker.com/sustainable-concrete-solutions.pdf
    • http://www.gorillawalker.com/oblivious-paradise.pdf
    • http://www.gorillawalker.com/empresarios-tecnocratas-y-militares-la-trama-corporativa-de-la-ultima.pdf
    • http://www.gorillawalker.com/fear-is-power-turn-your-fears-into-success.pdf
    • http://www.gorillawalker.com/financial-accounting-the-impact-on-decision-makers-with-2009-ifrs.pdf
    • http://www.gorillawalker.com/the-great-plateau-of-northern-rhodesia-being-some-impressions-of.pdf
    • http://www.gorillawalker.com/girls-on-track-a-parent-s-guide-to-inspiring-our.pdf
    • http://www.gorillawalker.com/52-activities-to-share-with-your-grandchild.pdf
    • http://www.gorillawalker.com/god-s-traitors-terror-and-faith-in-elizabethan-england.pdf
    • http://www.gorillawalker.com/early-feminists-of-colonial-india-sarala-devi-chaudhurani-and-rokeya.pdf
    • http://www.gorillawalker.com/the-wiley-blackwell-handbook-of-schema-therapy-theory-research-and.pdf
    • http://www.gorillawalker.com/les-terres-humides-petit-monde-vivant-french-edition.pdf
    • http://www.gorillawalker.com/201-tips-to-start-and-build-your-own-business.pdf
    • http://www.gorillawalker.com/john-3-16-verse-stickers.pdf
    • http://www.gorillawalker.com/murphy-s-law-doctors.pdf
    • http://www.gorillawalker.com/grandpa-is-everything-black-bad.pdf
    • http://www.gorillawalker.com/gottschee-journey-listening-to-the-ghosts.pdf
    • http://www.gorillawalker.com/cartoons-and-manga-design-pads.pdf
    • http://www.gorillawalker.com/by-belleruth-naparstek-a-meditation-to-help-with-irritable-bowel.pdf
    • http://www.gorillawalker.com/geometry-teacher-s-edition-common-core-edition.pdf
    • http://www.gorillawalker.com/elizabeth-sparhawk-jones-the-artist-who-lived-twice.pdf
    • http://www.gorillawalker.com/congenital-malformations-of-the-heart-embryology-anatomy-and-operative-considerations.pdf
    • http://www.gorillawalker.com/imperial-rome-to-the-present-day-transparent-overlays-of-archaeological.pdf
    • http://www.gorillawalker.com/the-shape-of-things-turtleback-school-library-binding-edition.pdf
    • http://www.gorillawalker.com/religion-and-morality-an-introduction.pdf
    • http://www.gorillawalker.com/3013-claimed-3013-the-series-volume-3.pdf
    • http://www.gorillawalker.com/deliver-us-from-evil.pdf
    • http://www.gorillawalker.co
    • 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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