Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3b235fa1fe169ff…

MALICIOUS

PDF

41.7 KB Created: 2018-11-22 08:02:41 +03:00 Authoring application: PScript5.dll Version 5.2.2 (via Acrobat Distiller 10.1.4 (Windows))
MD5: 89a8aecdf20438117f136106ff79aa1d SHA-1: 2aa22bf2419ade3cfbf30256068b98c365c52d05 SHA-256: f3b235fa1fe169ff7f2b31892c594b9e8a99cc76af5b771d3ba78c6c9b999f36
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links to external PDF files, a technique often used for SEO manipulation or to distribute malicious content. The ML classifier also flagged this PDF as malicious. No scripts were extracted from this sample, and the document body was not sufficiently readable to determine a specific lure. The primary attack pattern observed is the mass linking to external resources.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8872

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/salvation-by-surprise-a-commentary-on-the-book-of-romans.pdf
    • http://www.gorillawalker.com/three-easier-waltzes-the-keyboard-artist.pdf
    • http://www.gorillawalker.com/earthquake-pb-disaster-book.pdf
    • http://www.gorillawalker.com/death-in-a-cold-climate-a-guide-to-scandinavian-crime.pdf
    • http://www.gorillawalker.com/fragile-edge-a-personal-portrait-of-loss-on-everest-paperback.pdf
    • http://www.gorillawalker.com/narrative-of-a-two-years-residence-at-nineveh-v1-and.pdf
    • http://www.gorillawalker.com/julia-en-haar-vissen-bob-en-bep-dutch-edition.pdf
    • http://www.gorillawalker.com/analytic-philosophy-in-america-and-other-historical-and-contemporary-essays.pdf
    • http://www.gorillawalker.com/machine-learning-and-knowledge-discovery-in-databases-european-conference-ecml.pdf
    • http://www.gorillawalker.com/architettura-sostenibile.pdf
    • http://www.gorillawalker.com/a-practical-guide-to-working-with-young-children.pdf
    • http://www.gorillawalker.com/beirut-focus-guide-footprint-focus.pdf
    • http://www.gorillawalker.com/the-collective-potential-a-holistic-approach-to-managing-information-flow.pdf
    • http://www.gorillawalker.com/the-new-lady-in-waiting-becoming-god-s-best-while.pdf
    • http://www.gorillawalker.com/vagina-a-new-biography.pdf
    • http://www.gorillawalker.com/the-dead-ground-paula-maguire.pdf
    • http://www.gorillawalker.com/playalong-cello-film-tunes.pdf
    • http://www.gorillawalker.com/manual-of-soil-plant-and-fertilizer-analysis.pdf
    • http://www.gorillawalker.com/how-to-do-everything-with-your-scanner.pdf
    • http://www.gorillawalker.com/a-primer-in-theory-construction.pdf
    • http://www.gorillawalker.com/the-navy-in-mesopotamia-1914-to-1917.pdf
    • http://www.gorillawalker.com/amie-an-african-adventure-kindle-edition.pdf
    • http://www.gorillawalker.com/finding-peace-a-medieval-romance.pdf
    • http://www.gorillawalker.com/11-mistakes-couples-make-during-deployments.pdf
    • http://www.gorillawalker.com/6-german-dances-k-567-bassoon-1-part-qty-4.pdf
    • http://www.gorillawalker.com/creating-a-successful-retirement-finding-peace-and-purpose-paperback.pdf
    • http://www.gorillawalker.com/natural-bravery-fear-and-fearlessness-as-a-direct-path-of.pdf
    • http://www.gorillawalker.com/john-maynard-keynes-the-economic-consequences-of-the-peace.pdf
    • http://www.gorillawalker.com/netwars-2-down-time-compilation-two-thriller-netwars-2-a.pdf
    • http://www.gorillawalker.com/broken-lost-series-1-digital.pdf
    • http://www.gorillawalker.com/survival-fiction-tumultus-a-christian-post-apocalyptic-survival-fiction-novel.pdf
    • http://www.gorillawalker.com/a-cry-from-the-clay.pdf
    • http://www.gorillawalker.com/influencia-espiritual-el-poder-secreto-detr-s-del-liderazgo-spanish.pdf
    • http://www.gorillawalker.com/plastic-orca-soundings.pdf
    • http://www.gorillawalker.com/civil-3d-made-ridiculously-easy-2014-your-first-step-to.pdf
    • http://www.gorillawalker.com/how-the-light-gets-in-a-chief-inspector-gamache-novel.pdf
    • http://www.gorillawalker.com/world-without-cats.pdf
    • http://www.gorillawalker.com/moleskine-city-notebook-praha-prague.pdf
    • http://www.gorillawalker.com/complete-unwind-dystology-unwind-unwholly-unsouled-undivided.pdf
    • http://www.gorillawalker.com/brazil-the-amazons-and-the-coast.pdf
    • http://www.gorillawalker.com/julia-en-haa
    • 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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