Malicious PDF — malware analysis report

Static analysis result for SHA-256 43510ec57e61b7ac…

MALICIOUS

PDF

43.7 KB Created: 2018-12-02 10:59:26 +03:00 Authoring application: Writer (via OpenOffice.org 2.4)
MD5: fb3e0684ba04bfff08e81b7d7fb4ab7e SHA-1: 0e4745d72cb3e9d4c57037b3a9f2aa1ca07fa222 SHA-256: 43510ec57e61b7ac3121307949682aeab17f66bb0a8fe78a372b989fc71eecfb
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links pointing to external PDF files on the domain www.gorillawalker.com. This heuristic firing, PDF_SEO_LINK_FARM, indicates a potential attempt to manipulate search engine results or distribute a large volume of content. The ML classifier also flagged this PDF as malicious with high confidence. No scripts were extracted from this sample, and the document body was heavily obfuscated.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9171

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/local-butterflies-of-marin-county.pdf
    • http://www.gorillawalker.com/an-tslaivein-scots-gaelic-edition.pdf
    • http://www.gorillawalker.com/pressure-cooker-recipes-and-quick-n-cheap-recipes-for-a.pdf
    • http://www.gorillawalker.com/chomper-dinotopia-no-11.pdf
    • http://www.gorillawalker.com/the-history-of-new-york-jets-nfl-today-nfl-today.pdf
    • http://www.gorillawalker.com/paleo-chicken-the-ultimate-chicken-cookbook-top-50-quick-and.pdf
    • http://www.gorillawalker.com/when-i-grow-too-old-hammerstein-1935-sheet-music-folder.pdf
    • http://www.gorillawalker.com/al-roker-s-big-bad-book-of-barbecue-more-than.pdf
    • http://www.gorillawalker.com/hip-hop.pdf
    • http://www.gorillawalker.com/a-quoi-sert-la-concurrence-french-edition.pdf
    • http://www.gorillawalker.com/small-arms-modern-weapons-compared-and-contrasted.pdf
    • http://www.gorillawalker.com/manual-of-cancer-treatment-recovery-what-the-practitioner-needs-to.pdf
    • http://www.gorillawalker.com/understanding-samuel-beckett-understanding-contemporary-european-and-latin-american-liter.pdf
    • http://www.gorillawalker.com/grateful-dead-guitar-tab-anthology-authentic-guitar-tab.pdf
    • http://www.gorillawalker.com/infection-control-management-of-hazardous-materials-for-the-dental-team.pdf
    • http://www.gorillawalker.com/an-lisis-t-cnico-y-velas-japonesas-para-inversores-de.pdf
    • http://www.gorillawalker.com/mass-dictatorship-and-modernity-mass-dictatorship-in-the-twentieth-century.pdf
    • http://www.gorillawalker.com/2011-u-s-carpentry-contractors-industry-jobs-wages-report-download.pdf
    • http://www.gorillawalker.com/seven-little-mice-go-to-school.pdf
    • http://www.gorillawalker.com/a-daughter-of-zion-zion-chronicles.pdf
    • http://www.gorillawalker.com/first-team-dad-your-playbook-for-a-winning-family.pdf
    • http://www.gorillawalker.com/the-painter-s-pool.pdf
    • http://www.gorillawalker.com/angels-and-demons-a-catholic-introduction-thomistic-ressourcement.pdf
    • http://www.gorillawalker.com/grace-s-sweet-life-homemade-italian-desserts-from-cannoli-tiramisu.pdf
    • http://www.gorillawalker.com/children-s-bible-stories-noah-s-ark-kindle-edition.pdf
    • http://www.gorillawalker.com/trading-up-financial-markets-essential-strategies.pdf
    • http://www.gorillawalker.com/big-english-plus-5-pupils-book-with-myenglishlab-access-code.pdf
    • http://www.gorillawalker.com/the-slave-market-kindle-edition.pdf
    • http://www.gorillawalker.com/mummies-of-ancient-egypt-ancient-egyptian-civilization.pdf
    • http://www.gorillawalker.com/coal-in-brazil-to-2015-market-brief-download-pdf-digital.pdf
    • http://www.gorillawalker.com/the-best-of-totline-volume-i.pdf
    • http://www.gorillawalker.com/tampa-fl-street-map-american-map.pdf
    • http://www.gorillawalker.com/peerage-law-in-england-a-practical-treatise-for-lawyers-and.pdf
    • http://www.gorillawalker.com/the-spanish-inquisition-gd-great-disasters-reforms-and-ramifications.pdf
    • http://www.gorillawalker.com/annual-it-salary-survey-pay-gets-pinched-raises-are-hard.pdf
    • http://www.gorillawalker.com/introduction-to-chemical-engineering-tools-for-today-and-tomorrow.pdf
    • http://www.gorillawalker.com/ecograf.pdf
    • http://www.gorillawalker.com/dissolving-the-family-company-kindle-edition.pdf
    • http://www.gorillawalker.com/the-ships-and-aircraft-of-the-u-s-fleet-war.pdf
    • 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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