Malicious PDF — malware analysis report

Static analysis result for SHA-256 77a899af66a74fcb…

MALICIOUS

PDF

41.9 KB Created: 2018-11-23 08:08:31 +03:00 Authoring application: FrameMaker 11.0.2 (via Acrobat Elements 10.0.0 (Windows))
MD5: 682349e40235f01b6dd0950c5a83f385 SHA-1: a14bbec7f54a89c656401e290d019edddaf6baba SHA-256: 77a899af66a74fcb3337055db1081ecaecc52d176feeb7f1103f8590ce522fbd
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. A critical heuristic identified a large number of embedded external links, suggesting a link farm or distribution mechanism. While no scripts were extracted, the sheer volume of links points towards an attempt to manipulate search engine results or distribute further malicious content, potentially leading to a phishing or malware download scenario.

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/seeing-through-race-the-w-e-b-du-bois-lectures.pdf
    • http://www.gorillawalker.com/b-la-tarr-the-time-after-univocal.pdf
    • http://www.gorillawalker.com/patrimonio-al-futuro-un-manifesto-per-i-beni-culturali-e.pdf
    • http://www.gorillawalker.com/fly-monarch-fly.pdf
    • http://www.gorillawalker.com/summary-the-seven-day-weekend-ricardo-semler-finding-the-work.pdf
    • http://www.gorillawalker.com/mary-engelbreit-s-let-s-party-cookbook.pdf
    • http://www.gorillawalker.com/tolkien-digital.pdf
    • http://www.gorillawalker.com/a-caminho-dos-mapas-2-em-portuguese-do-brasil.pdf
    • http://www.gorillawalker.com/the-guerrilla-marketing-handbook.pdf
    • http://www.gorillawalker.com/cultura-mainstream-c.pdf
    • http://www.gorillawalker.com/stand-seeking-the-way-of-god-a-discovery-of-genesis.pdf
    • http://www.gorillawalker.com/martin-scorsese-twayne-s-filmmakers-series.pdf
    • http://www.gorillawalker.com/the-forbidden-library.pdf
    • http://www.gorillawalker.com/the-last-unicorn-is-it-my-responsibility-to-protect-the.pdf
    • http://www.gorillawalker.com/animator-cool-careers.pdf
    • http://www.gorillawalker.com/la-vie-du-prophete-mahomet-colloque-de-strasbourg-octobre-1980.pdf
    • http://www.gorillawalker.com/una-estrella-que-no-se-apaga-spanish-edition.pdf
    • http://www.gorillawalker.com/physical-science-with-earth-and-space-science-tennessee-teacher-s.pdf
    • http://www.gorillawalker.com/the-journey-into-spirit-a-pagan-s-perspective-on-death.pdf
    • http://www.gorillawalker.com/dissertations-sur-la-recherche-de-la-verite-contenant-l-histoire.pdf
    • http://www.gorillawalker.com/an-atlas-of-diabetes-mellitus-second-edition-encyclopedia-of-visual.pdf
    • http://www.gorillawalker.com/methods-of-text-and-discourse-analysis-in-search-of-meaning.pdf
    • http://www.gorillawalker.com/modeling-differential-equations-in-biology.pdf
    • http://www.gorillawalker.com/carpal-tunnel-syndrome-what-you-don-t-know-can-hurt.pdf
    • http://www.gorillawalker.com/writers-at-work-the-short-composition-student-s-book.pdf
    • http://www.gorillawalker.com/cold-harbour-dougal-munro-jack-carter-series.pdf
    • http://www.gorillawalker.com/napoleon-bonaparte-a-life.pdf
    • http://www.gorillawalker.com/learning-english-skills-through-word-processing-2nd-edition.pdf
    • http://www.gorillawalker.com/paul-temple-and-the-kelby-affair-a-paul-temple-mystery.pdf
    • http://www.gorillawalker.com/m-m-and-the-bad-news-babies.pdf
    • http://www.gorillawalker.com/french-country-diary-2010.pdf
    • http://www.gorillawalker.com/wok-cooking-1986-publication-paperback.pdf
    • http://www.gorillawalker.com/philosophy-goes-to-the-movies-an-introduction-to-philosophy.pdf
    • http://www.gorillawalker.com/the-black-death-in-slip-case-folio-society.pdf
    • http://www.gorillawalker.com/multiple-sclerosis-5th-ed-5th-fifth-edition-by-kalb-md.pdf
    • http://www.gorillawalker.com/healing-the-divided-self-clinical-and-ericksonian-hypnotherapy-for-dissociative.pdf
    • http://www.gorillawalker.com/by-norman-lewis-a-dragon-apparent-travels-in-cambodia-laos.pdf
    • http://www.gorillawalker.com/3rd-international-conference-on-optical-information-processing-28-31-may.pdf
    • http://www.gorillawalker.com/programming-in-cobol-400.pdf
    • http://www.gorillawalker.com/serevent-diskus-treats-asthma-chronic-obstructive-pulmonary-disease-including-chronic.pdf
    • http://www.gorillawalker.com/cultura-mainstre
    • 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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