Malicious PDF — malware analysis report

Static analysis result for SHA-256 a627462547d7670e…

MALICIOUS

PDF

44.1 KB Created: 2019-03-17 11:02:26 +03:00 Authoring application: - (via ABBYY FineReader 9.0 Sprint)
MD5: af8c7305753570fd591d724d1168a3af SHA-1: ad31c786a305b68e8fe42e9183ed76a6616eff3d SHA-256: a627462547d7670ee4d084c5b189eddba4371c3ba68aeffaf261a8f84f7d63e9
90 Risk Score

Malware Insights

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

The PDF contains a large number of external links, primarily hosted on www.gorillawalker.com, suggesting a link farm or SEO manipulation tactic. The ML classifier also flagged this PDF as malicious. No scripts were extracted, and the document body was heavily obfuscated, limiting further analysis of the specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8439

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/theodore-g-spencer-et-al-appellants-v-redevelopment-authority-of.pdf
    • http://www.gorillawalker.com/no-muerdas-el-anzuelo-como-escapar-de-la-pornograf-a.pdf
    • http://www.gorillawalker.com/el-libro-de-la-cocina-asiatica-asian-cookbook-spanish-edition.pdf
    • http://www.gorillawalker.com/the-magical-worlds-of-lord-of-the-rings-the-amazing.pdf
    • http://www.gorillawalker.com/ask-your-guides-6-cd-lecture-how-to-connect-with.pdf
    • http://www.gorillawalker.com/venus-grand-tour-series.pdf
    • http://www.gorillawalker.com/understanding-voltammetry-problems-and-solutions.pdf
    • http://www.gorillawalker.com/civics-today-citizenship-economics-and-you-student-edition.pdf
    • http://www.gorillawalker.com/embracing-elderhood-planning-for-the-next-stage-of-life-kindle.pdf
    • http://www.gorillawalker.com/in-adam-s-fall-a-meditation-on-the-christian-doctrine.pdf
    • http://www.gorillawalker.com/gentle-beast-a-sci-fi-romance-noor-chronicles-volume-1.pdf
    • http://www.gorillawalker.com/farewell-my-subaru-an-epic-adventure-in-local-living.pdf
    • http://www.gorillawalker.com/american-jurisprudence-2d-vols-16-16a-16b-conflict-of-laws.pdf
    • http://www.gorillawalker.com/book-of-akathists-volume-ii-to-our-saviour-the-holy.pdf
    • http://www.gorillawalker.com/lavender-sensations-fragrant-herbs-for-home-bath.pdf
    • http://www.gorillawalker.com/facebook-recruiting-rockstar-recruit-3-new-reps-in-7-days.pdf
    • http://www.gorillawalker.com/vintage-and-historic-drag-racers-enthusiast-color.pdf
    • http://www.gorillawalker.com/the-telephone-wiring-america-building-america-then-and-now-kindle.pdf
    • http://www.gorillawalker.com/lonely-planet-west-africa-multi-country-travel-guide.pdf
    • http://www.gorillawalker.com/cars-in-the-uk-a-survey-of-all-british-built.pdf
    • http://www.gorillawalker.com/natural-learning-rhythms-discovering-how-and-when-your-child-learns.pdf
    • http://www.gorillawalker.com/transformational-leadership-in-government-st-lucie.pdf
    • http://www.gorillawalker.com/jazz-piano-and-harmony-an-advanced-guide-book-cd-set.pdf
    • http://www.gorillawalker.com/california-life-agent-insurance-manual.pdf
    • http://www.gorillawalker.com/21-hungarian-dances-orchestra-woo-1-no-9-trombone-1.pdf
    • http://www.gorillawalker.com/observations-on-modern-falconry.pdf
    • http://www.gorillawalker.com/getting-started-with-processing.pdf
    • http://www.gorillawalker.com/disabilities-and-equality-exploring-the-issues-study-guide-issues-for.pdf
    • http://www.gorillawalker.com/l-abri-new-expanded-edition.pdf
    • http://www.gorillawalker.com/calvin-and-the-biblical-languages.pdf
    • http://www.gorillawalker.com/colour-calligraphy.pdf
    • http://www.gorillawalker.com/the-milers.pdf
    • http://www.gorillawalker.com/la-gloria-de-iluro-tragedia-en-honor-de-las-s.pdf
    • http://www.gorillawalker.com/shakespeare-and-the-moving-image-the-plays-on-film-and.pdf
    • http://www.gorillawalker.com/diccionario-pr-ctico-del-estudiante-spanish-edition.pdf
    • http://www.gorillawalker.com/music-of-benjamin-britten-an-analytic-commentary.pdf
    • http://www.gorillawalker.com/was-google-wirklich-will-wie-der-einflussreichste-konzern-der-welt.pdf
    • http://www.gorillawalker.com/puppies-i-love-2016-square-12x12.pdf
    • http://www.gorillawalker.com/cash-investment-management-for-nonprofit-organizations.pdf
    • http://www.gorillawalker.com/subject-to-change-jung-gender-and-subjectivity-in-psychoanalysis.pdf
    • http://www.gorillawalker.com/el-libro-de-la-cocin
    • 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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