Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d818fc3d4fe28ab…

MALICIOUS

PDF

40.4 KB Created: 2019-04-11 13:06:10 +03:00 Authoring application: XEP 4.4 build 20050610
MD5: 4fa2a10f07dce343f25becbe19087de5 SHA-1: 7de8c7f73e224256441bdb564595af8059b03358 SHA-256: 3d818fc3d4fe28abd9a807371cf32bbc687b1c9ad87a98046934ec0b2d04b7d3
90 Risk Score

Malware Insights

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

The PDF contains a large number of external links to PDF files on the domain 'gorillawalker.com'. This behavior is indicative of a link farm, often used for SEO manipulation or to distribute malicious content. The ML classifier also flagged this PDF as malicious. No scripts were extracted, and the document body was heavily obfuscated, preventing a deeper analysis of the specific lure.

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/an-aesop-adventure-fables-songs-and-activities-for-the-elementary.pdf
    • http://www.gorillawalker.com/the-english-a-field-guide.pdf
    • http://www.gorillawalker.com/furniture-by-architects-from-aalto-to-zumthor.pdf
    • http://www.gorillawalker.com/brand-environment-design.pdf
    • http://www.gorillawalker.com/making-ads-work.pdf
    • http://www.gorillawalker.com/pen-ink-sketching-step-by-step-dover-art-instruction.pdf
    • http://www.gorillawalker.com/the-physics-and-chemistry-of-solids.pdf
    • http://www.gorillawalker.com/scientific-method-a-historical-and-philosophical-introduction-routledge-advances-in.pdf
    • http://www.gorillawalker.com/edith-b-ziegenhorn-diaries-a-young-girl-s-life-in.pdf
    • http://www.gorillawalker.com/totem-and-taboo-some-points-of-agreement-between-the-mental.pdf
    • http://www.gorillawalker.com/the-police-station-a-visit-to.pdf
    • http://www.gorillawalker.com/bronchitis-treatment-guide-how-to-treat-bronchitis-emphysema-and-copd.pdf
    • http://www.gorillawalker.com/cmos-front-ends-for-millimeter-wave-wireless-communication-systems-analog.pdf
    • http://www.gorillawalker.com/over-the-handlebars-a-selection-of-motorcycle-stories.pdf
    • http://www.gorillawalker.com/silvertone-bread-plate.pdf
    • http://www.gorillawalker.com/henderson-boulder-city.pdf
    • http://www.gorillawalker.com/haiku-the-poetry-of-nature.pdf
    • http://www.gorillawalker.com/wind-pinball-two-early-novels.pdf
    • http://www.gorillawalker.com/the-handbook-of-sidescan-sonar-springer-praxis-books-geophysical-sciences.pdf
    • http://www.gorillawalker.com/the-abortion-papers-ireland-volume-2.pdf
    • http://www.gorillawalker.com/suicide-and-the-inner-voice-risk-assessment-treatment-and-case.pdf
    • http://www.gorillawalker.com/the-greek-philosophers-from-thales-to-aristotle.pdf
    • http://www.gorillawalker.com/doctrinas-b-blicas.pdf
    • http://www.gorillawalker.com/peterson-field-guide-to-freshwater-fishes-second-edition-peterson-field.pdf
    • http://www.gorillawalker.com/hal-leonard-rubank-concert-and-contest-for-clarinet-accompaniment-cd.pdf
    • http://www.gorillawalker.com/i-met-a-mouse.pdf
    • http://www.gorillawalker.com/solutions-in-lidar-profiling-of-the-atmosphere.pdf
    • http://www.gorillawalker.com/sanguinarian-siren-publishing-classic.pdf
    • http://www.gorillawalker.com/glass-jaw-a-manifesto-for-defending-fragile-reputations-in-an.pdf
    • http://www.gorillawalker.com/rumi-daylight-a-daybook-of-spiritual-guidance.pdf
    • http://www.gorillawalker.com/brecon-beacons.pdf
    • http://www.gorillawalker.com/stone-images-of-esie-nigeria.pdf
    • http://www.gorillawalker.com/heralds-of-that-good-realm-syro-mesopotamian-gnosis-and-jewish.pdf
    • http://www.gorillawalker.com/jesus-calling-book-club-discussion-guide-for-athletes.pdf
    • http://www.gorillawalker.com/white-church-ordination-certificate.pdf
    • http://www.gorillawalker.com/mastering-the-trade-proven-techniques-for-profiting-from-intraday-and.pdf
    • http://www.gorillawalker.com/little-book-of-porsche.pdf
    • http://www.gorillawalker.com/stallcup-s-one-and-two-family-dwellings.pdf
    • http://www.gorillawalker.com/turnaround-prescription.pdf
    • http://www.gorillawalker.com/lost-in-shangri-la-escape-from-a-hidden-world-a.pdf
    • http://www.gorillawalker.com/scientific-me
    • 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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