Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b15896d270e968c…

MALICIOUS

PDF

43.2 KB Created: 2019-04-11 09:57:43 +03:00 Authoring application: Writer (via OpenOffice.org 1.1.2)
MD5: 1e1002a5b8911e92df99313441cffbc3 SHA-1: be4d67df692c8629747a7d8b0176f3911762f992 SHA-256: 9b15896d270e968c6741202b62662e88fd046ead2955c3c7c23074dcea98367a
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded URLs pointing to external PDF files, as indicated by the PDF_SEO_LINK_FARM heuristic. The ML_NYX_PDF_MALICIOUS heuristic also flagged the document. The embedded URLs are likely used to manipulate search engine rankings or to distribute additional malicious content, although no specific payload was identified within this sample. The document body itself is heavily obfuscated and does not provide clear textual lures.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8683

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/dementia-13-number-14.pdf
    • http://www.gorillawalker.com/history-of-u-s-aviation-disasters-1950-to-9-11.pdf
    • http://www.gorillawalker.com/1200-reading-toefl-practice-english-poetry-river-korean-edition.pdf
    • http://www.gorillawalker.com/stone-age-boy.pdf
    • http://www.gorillawalker.com/the-mad-butcher-of-kingsbury-run-the-remarkable-true-account.pdf
    • http://www.gorillawalker.com/italian-medium-tanks-1939-45-new-vanguard.pdf
    • http://www.gorillawalker.com/stir-fry-cooking.pdf
    • http://www.gorillawalker.com/soy-una-criatura-emocional-la-vida-secreta-de-las-chicas.pdf
    • http://www.gorillawalker.com/foldrajzi-atlasz-a-11-14-eves-tanulok-szamara-hungarian-edition.pdf
    • http://www.gorillawalker.com/raising-cain-and-his-sisters-halo-hattie-s-boarding-house.pdf
    • http://www.gorillawalker.com/life-in-a-rain-forest-ecosystem-science-scope.pdf
    • http://www.gorillawalker.com/the-cell-story.pdf
    • http://www.gorillawalker.com/an-introduction-to-3d-computer-graphics-stereoscopic-image-and-animation.pdf
    • http://www.gorillawalker.com/michelin-green-guide-rome-green-tourist-guides.pdf
    • http://www.gorillawalker.com/intimacy-with-impotence-the-couple-s-guide-to-better-sex.pdf
    • http://www.gorillawalker.com/a-manual-of-the-chiggers-the-biology-classification-distribution-and.pdf
    • http://www.gorillawalker.com/the-moroccan-collection-traditional-flavours-from-northern-africa.pdf
    • http://www.gorillawalker.com/boat-building.pdf
    • http://www.gorillawalker.com/ritchie-boss-private-investigator-manager-kindle-edition.pdf
    • http://www.gorillawalker.com/living-in-new-england.pdf
    • http://www.gorillawalker.com/beginning-chopin-for-piano-beginning-piano-series.pdf
    • http://www.gorillawalker.com/dracula-s-scarlet-symphony.pdf
    • http://www.gorillawalker.com/san-diego-county-place-names.pdf
    • http://www.gorillawalker.com/practical-operation-of-warehouse-management-the-project-of-the-planned.pdf
    • http://www.gorillawalker.com/software-engineering-economics.pdf
    • http://www.gorillawalker.com/faith-begins-home-grandparents.pdf
    • http://www.gorillawalker.com/how-to-get-into-films-and-tv.pdf
    • http://www.gorillawalker.com/pershing-a-biography-great-generals.pdf
    • http://www.gorillawalker.com/wisdom-for-home-brewers-500-tips-for-making-great-beers.pdf
    • http://www.gorillawalker.com/the-principles-of-multimedia-journalism-packaging-digital-news-digital.pdf
    • http://www.gorillawalker.com/atlas-of-pelvic-anatomy-and-gynecologic-surgery-3e-baggish-atlas.pdf
    • http://www.gorillawalker.com/amer-exp-gt-boston-canc.pdf
    • http://www.gorillawalker.com/piano-technique-demystified-second-edition-revised-and-expanded-insights-into.pdf
    • http://www.gorillawalker.com/pack-of-dorks.pdf
    • http://www.gorillawalker.com/11b-elemento-el-spanish-edition.pdf
    • http://www.gorillawalker.com/life-and-death-at-the-pestera-cu-oase-a-setting.pdf
    • http://www.gorillawalker.com/the-existing-financial-system-in-relation-to-post-war-reconstruction.pdf
    • http://www.gorillawalker.com/board-of-public-instruction-of-pinellas-county-florida-v-bradley.pdf
    • http://www.gorillawalker.com/vincent-van-gogh-modern-artist-kindle-edition.pdf
    • http://www.gorillawalker.com/fundamentos-de-matematicas-mathematical-fundamentals-spanish-edition.pdf
    • http://www.gorillawalker.com/raising-cain-and-his-sisters
    • 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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