Malicious PDF — malware analysis report

Static analysis result for SHA-256 dbe549558793bb46…

MALICIOUS

PDF

41.7 KB Created: 2018-11-26 20:12:18 +03:00 Authoring application: Adobe InDesign CS5_J (7.0.4) (via Acrobat Distiller 9.5.0 (Windows))
MD5: ccb8c939db7e60806e44373195e5b4ad SHA-1: c4b3975c15119464df575b5b8c08843fff3b4666 SHA-256: dbe549558793bb469e2180f7d6d7b5d81f37d240d18728a384e1dc7a6c23b971
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 as malicious and contains a large number of external links to PDF files hosted on www.gorillawalker.com. This behavior is indicative of a link farm or a method to distribute further malicious content, potentially for SEO manipulation or to host phishing lures. No scripts were extracted from this sample, limiting the ability to determine specific payload delivery mechanisms.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9181

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/our-republican-constitution.pdf
    • http://www.gorillawalker.com/2013-2014-basic-and-clinical-science-course-section-9-intraocular.pdf
    • http://www.gorillawalker.com/the-best-of-bbc-comedy-50s-v-2-bbc-radio.pdf
    • http://www.gorillawalker.com/student-activities-in-earth-science-for-christian-schools-teacher-s.pdf
    • http://www.gorillawalker.com/your-image-talks-how-to-win-the-pitch-presentation-or.pdf
    • http://www.gorillawalker.com/the-king-s-return-thomas-hill.pdf
    • http://www.gorillawalker.com/chocolate-cake-recipes-kindle-edition.pdf
    • http://www.gorillawalker.com/olds-maternal-newborn-nursing-women-s-health-across-the-lifespan.pdf
    • http://www.gorillawalker.com/baby-s-abc-so-tall-board-books.pdf
    • http://www.gorillawalker.com/daughters-of-joy-sisters-of-misery-prostitutes-in-the-american.pdf
    • http://www.gorillawalker.com/two-worlds-and-promised-lands.pdf
    • http://www.gorillawalker.com/the-hot-knives-vegetarian-cookbook-salad-daze.pdf
    • http://www.gorillawalker.com/ib-english-a-language-literature-standard-higher-level-osc-ib.pdf
    • http://www.gorillawalker.com/jefferson-the-virginian-jefferson-and-his-time.pdf
    • http://www.gorillawalker.com/greek-tragedy-into-film.pdf
    • http://www.gorillawalker.com/phylogenetic-relationships-of-the-earliest-anisostrophically-coiled-gastropods-2002-smithsonian.pdf
    • http://www.gorillawalker.com/freebsd-device-drivers-a-guide-for-the-intrepid-kindle-edition.pdf
    • http://www.gorillawalker.com/oxford-handbook-of-clinical-skills-in-adult-nursing-oxford-handbooks.pdf
    • http://www.gorillawalker.com/the-family-of-god-creating-a-fair-community-a-peacemaking.pdf
    • http://www.gorillawalker.com/the-hippie-house.pdf
    • http://www.gorillawalker.com/adriana-lecouvreur-act-i-duetto-soprano-tenor-adriana-maurizio-trombone.pdf
    • http://www.gorillawalker.com/veterinary-drug-handbook-desk-edition.pdf
    • http://www.gorillawalker.com/children-s-clothes-since-1750.pdf
    • http://www.gorillawalker.com/divorce-and-family-mediation-the-family-therapy-collections.pdf
    • http://www.gorillawalker.com/the-essential-dave-allen.pdf
    • http://www.gorillawalker.com/a-village-to-village-guide-to-hiking-the-camino-de.pdf
    • http://www.gorillawalker.com/hamlet-french-edition.pdf
    • http://www.gorillawalker.com/reviews-on-immunoassay-technology-v-2.pdf
    • http://www.gorillawalker.com/overstreet-comic-book-price-guide-19-19th-edition-1989-1990.pdf
    • http://www.gorillawalker.com/passover-living-festivals.pdf
    • http://www.gorillawalker.com/pre-algebra-grades-6-8-the-100-series-tm.pdf
    • http://www.gorillawalker.com/sexual-ecstasy-the-art-of-orgasm.pdf
    • http://www.gorillawalker.com/the-causes-of-epilepsy-common-and-uncommon-causes-in-adults.pdf
    • http://www.gorillawalker.com/beyond-the-highland-mist-to-tame-a-highland-warrior-highlanders.pdf
    • http://www.gorillawalker.com/mythic-monsters-dragons-volume-13.pdf
    • http://www.gorillawalker.com/the-classic-ballet-basic-technique-and-terminology.pdf
    • http://www.gorillawalker.com/valuation-of-companies-in-emerging-markets.pdf
    • http://www.gorillawalker.com/the-automotive-chassis-engineering-principles.pdf
    • http://www.gorillawalker.com/c-g-jung-psychological-reflections-a-new-anthology-of-his.pdf
    • http://www.gorillawalker.com/fire-sea-the-death-gate-cycle-vol-3.pdf
    • http://www.gorillaw
    • 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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