Malicious PDF — malware analysis report

Static analysis result for SHA-256 78ce3c737cc5945b…

MALICIOUS

PDF

41.2 KB Created: 2018-11-15 18:32:10 +03:00 Authoring application: Writer (via OpenOffice.org 2.0.3)
MD5: ea499c88b7ab51b916e07a1df9880764 SHA-1: 8aa7358e3ec358ff7307e096d88021555dcb6830 SHA-256: 78ce3c737cc5945bd59347c19c6d0fc613b15e13746b56fc03c220664ed89d51
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs pointing to PDF files on the domain www.gorillawalker.com. This is indicative of a link farm, likely used for SEO manipulation or to distribute potentially malicious content. The ML classifier also flagged this PDF as malicious with high confidence. No scripts were extracted from this sample.

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/shi-ci-qu-yu-ci-ji-shi-mandarin-chinese-edition.pdf
    • http://www.gorillawalker.com/violin-concerto-no-2-op-44-orchestra-score-parts-flute.pdf
    • http://www.gorillawalker.com/barron-s-emt-3rd-edition-barron-s-how-to-prepare.pdf
    • http://www.gorillawalker.com/80-graded-studies-for-saxophone-bk-2.pdf
    • http://www.gorillawalker.com/the-honing.pdf
    • http://www.gorillawalker.com/streetwise-new-orleans-louisiana-fold-up-map-mylar-covered-indispensable.pdf
    • http://www.gorillawalker.com/lonely-planet-tasmania-road-trips-travel-guide.pdf
    • http://www.gorillawalker.com/silent-night-a-christmas-story-kindle-edition.pdf
    • http://www.gorillawalker.com/ireland-2015-mini-7x7.pdf
    • http://www.gorillawalker.com/the-gadget-scientist-guide-to-using-your-digital-camera.pdf
    • http://www.gorillawalker.com/egypt-aa-spiral-guides.pdf
    • http://www.gorillawalker.com/universities-and-copyright-collecting-societies-information-technology-and-law-series.pdf
    • http://www.gorillawalker.com/the-common-sense-book-of-baby-and-child-care-new.pdf
    • http://www.gorillawalker.com/scholastic-book-of-world-records-2014.pdf
    • http://www.gorillawalker.com/turning-the-tune-traditional-music-tourism-and-social-change-in.pdf
    • http://www.gorillawalker.com/superman-vs-the-terminator-death-to-the-future.pdf
    • http://www.gorillawalker.com/rosa-parks-people-we-should-know.pdf
    • http://www.gorillawalker.com/erlebe-china-author-christiansen-wulf.pdf
    • http://www.gorillawalker.com/intellectual-property-issues-therapeutics-vaccines-and-molecular-diagnostics-springerbriefs-in.pdf
    • http://www.gorillawalker.com/my-name-is-not-isabella-just-how-big-can-a.pdf
    • http://www.gorillawalker.com/hush-hush-2-kindle-edition.pdf
    • http://www.gorillawalker.com/maui-trails-walks-strolls-and-treks-on-the-valley-island.pdf
    • http://www.gorillawalker.com/mark-s-marvellous-book-learning-about-jesus-through-the-gospels.pdf
    • http://www.gorillawalker.com/diagnostic-nuclear-medicine-golden-s-diagnostic-radiology-section-20.pdf
    • http://www.gorillawalker.com/czech-republic-slovakia-1-500-000-travel-map-2012-edition.pdf
    • http://www.gorillawalker.com/shortcut-to-business-success-101-zero-cost-tactics-to-take.pdf
    • http://www.gorillawalker.com/non-equilibrium-thermodynamics-for-engineers.pdf
    • http://www.gorillawalker.com/a-cancer-therapy-results-of-fifty-cases-and-the-cure.pdf
    • http://www.gorillawalker.com/the-girl-who-remained-elusive-a-ya-dystopian-novel-book.pdf
    • http://www.gorillawalker.com/kosmic-consciousness-unabridged-audible-audio-edition.pdf
    • http://www.gorillawalker.com/houndsley-and-catina-and-the-quiet-time-candlewick-sparks.pdf
    • http://www.gorillawalker.com/rehabilitation-of-street-children-in-kenya-approaches-quality-and-challenges.pdf
    • http://www.gorillawalker.com/kennewick-man-perspectives-on-the-ancient-one-archaeology-indigenous-peoples.pdf
    • http://www.gorillawalker.com/underwater-acoustic-data-processing-nato-science-series-e.pdf
    • http://www.gorillawalker.com/the-autoimmune-diseases-fourth-edition.pdf
    • http://www.gorillawalker.com/azteca-spanish-edition.pdf
    • http://www.gorillawalker.com/imperial-hearst-a-social-biography-classic-reprint.pdf
    • http://www.gorillawalker.com/you-come-for-one-reason-but-stay-for-another-making.pdf
    • http://www.gorillawalker.com/pietro-giacomo-rogeri-p-i-italian-edition.pdf
    • http://www.gorillawalker.com/how-to-potty-train-a-boy-the-stress-free-7.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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