Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd1cf53bbde213c2…

MALICIOUS

PDF

40.1 KB Created: 2018-11-14 08:18:12 +03:00 Authoring application: QuarkXPress(R) 7.01
MD5: d65b0cd24bfc837ba5eaae9bb2c26c93 SHA-1: f250896253b9e0e54395becccdf6f41ea8ee1ee4 SHA-256: cd1cf53bbde213c25ecf20200fb49cacfc15d4310a32ef759a49a67dc1cdd01a
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 external PDF files, as indicated by the PDF_SEO_LINK_FARM heuristic. The ML classifier also flagged the document as malicious. The primary purpose appears to be SEO manipulation or distributing links to other potentially malicious content hosted on www.gorillawalker.com. No scripts were extracted from this sample.

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/hide-and-seek-puppies-a-magical-first-book-of-counting.pdf
    • http://www.gorillawalker.com/confesiones-de-una-vieja-dama-indigna-bruguera-narrativa-spanish-edition.pdf
    • http://www.gorillawalker.com/golden-retriever-calendar-just-golden-retriever-calendar-2016-wall-calendars.pdf
    • http://www.gorillawalker.com/stillmeadow-cook-book.pdf
    • http://www.gorillawalker.com/the-music-machine-selected-readings-from-computer-music-journal-new.pdf
    • http://www.gorillawalker.com/screenwriting-a-manual.pdf
    • http://www.gorillawalker.com/98-degrees-and-getting-hotter.pdf
    • http://www.gorillawalker.com/a-concise-survey-of-western-civilization-supremacies-and-diversities-throughout.pdf
    • http://www.gorillawalker.com/conspiracy-of-silence-the-trauma-of-incest.pdf
    • http://www.gorillawalker.com/persepolis-vol-2-en-espanol-persepolis-vol-2-spanish-edition.pdf
    • http://www.gorillawalker.com/early-history-of-nuclear-medicine-oral-history-transcript-1982.pdf
    • http://www.gorillawalker.com/grimm-fairy-tales-volume-11-tp.pdf
    • http://www.gorillawalker.com/the-book-of-proverbs-god-s-book-of-wisdom-book.pdf
    • http://www.gorillawalker.com/twentieth-century-type-designers.pdf
    • http://www.gorillawalker.com/la-leyenda-del-rey-errante-ebook-epub-especiales-laura-gallego.pdf
    • http://www.gorillawalker.com/orkney-folklore.pdf
    • http://www.gorillawalker.com/2016-zen-gardens-wall-calendar.pdf
    • http://www.gorillawalker.com/trapped-by-revenge-a-shelby-nichols-adventure-kindle-edition.pdf
    • http://www.gorillawalker.com/a-patra-ipoteza-ancheta-despre-o-uluitoare-afacere-de-spionaj.pdf
    • http://www.gorillawalker.com/kevin-smith-s-kato-tp-volume-2.pdf
    • http://www.gorillawalker.com/enciclopedia-pr-ctica-de-la-hipnosis-er-tica-y-de.pdf
    • http://www.gorillawalker.com/bounce-living-the-resilient-life.pdf
    • http://www.gorillawalker.com/5-pounds-the-breakthrough-5-day-plan-to-jumpstart-rapid.pdf
    • http://www.gorillawalker.com/jurassic-car-park.pdf
    • http://www.gorillawalker.com/what-is-postmodern-biblical-criticism-guides-to-biblical-scholarship-new.pdf
    • http://www.gorillawalker.com/etudes-for-the-piano-complete-alfred-masterwork-editions.pdf
    • http://www.gorillawalker.com/chess-for-children-kindle-edition.pdf
    • http://www.gorillawalker.com/belwin-master-solos-for-clarinet-volume-1-intermediate-piano-accompniment.pdf
    • http://www.gorillawalker.com/101-juice-recipes.pdf
    • http://www.gorillawalker.com/songs-of-kabir.pdf
    • http://www.gorillawalker.com/princess-payback-taboo-spoiled-brat-and-man-of-the-house.pdf
    • http://www.gorillawalker.com/kildekonens-sange-danish-edition.pdf
    • http://www.gorillawalker.com/die-entf-hrung-aus-dem-serail-k-384-aria-tenor.pdf
    • http://www.gorillawalker.com/freshwater-ecology-concepts-and-environmental-applications-of-limnology-aquatic-ecology.pdf
    • http://www.gorillawalker.com/medikidz-explain-sickel-cell-disease-what-s-up-with-casey.pdf
    • http://www.gorillawalker.com/crawl-space-science-what-to-have-done-and-why.pdf
    • http://www.gorillawalker.com/hobbi-el-awal-my-first-love-arabic-edition.pdf
    • http://www.gorillawalker.com/japanese-vocabulary-quickstudy-academic.pdf
    • http://www.gorillawalker.com/manual-of-articulatory-phonetics.pdf
    • http://www.gorillawalker.com/longman-dictionary-of-american-english-your-complete-guide-to-american.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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