Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2807c5a18f89558…

MALICIOUS

PDF

41.0 KB Created: 2018-11-14 08:48:43 +03:00 Authoring application: Pages (via Mac OS X 10.11.6 Quartz PDFContext)
MD5: 62e89b4f3cde0f3b6b416978ee998424 SHA-1: caf9f5146f7e93f680a9ff378c51839d008bc07a SHA-256: c2807c5a18f89558a9a4ba7834eb9772b5ed1bb7ed6f966641a7b88fdec302c3
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links to external websites, as indicated by the PDF_SEO_LINK_FARM heuristic. The ML classifier also flagged the document as malicious. While no scripts were extracted, the sheer volume of links suggests a malicious intent, possibly for SEO spam or to redirect users to phishing or malware hosting sites. The document body was heavily obfuscated and unreadable.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9027

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/introducci-n-a-la-medicina-homeop-tica-spanish-edition.pdf
    • http://www.gorillawalker.com/look-at-this-f-cking-hipster.pdf
    • http://www.gorillawalker.com/autocad-electrical-2014-for-electrical-control-designers.pdf
    • http://www.gorillawalker.com/marino-s-the-icu-book-icu-book-marino-kindle-edition.pdf
    • http://www.gorillawalker.com/amazing-armadillos-step-into-reading.pdf
    • http://www.gorillawalker.com/the-edge-of-fusion.pdf
    • http://www.gorillawalker.com/fruits-a-caribbean-counting-poem.pdf
    • http://www.gorillawalker.com/secretos-de-una-dama-spanish-edition.pdf
    • http://www.gorillawalker.com/the-world-of-hildegard-of-bingen-her-life-times-and.pdf
    • http://www.gorillawalker.com/boudicca-s-heirs-women-in-early-britain.pdf
    • http://www.gorillawalker.com/dk-pocket-eyewitness-insects.pdf
    • http://www.gorillawalker.com/orations-1-and-3-bryn-mawr-commentaries-greek.pdf
    • http://www.gorillawalker.com/breakthrough-rapid-reading.pdf
    • http://www.gorillawalker.com/modern-times-the-world-from-the-twenties-to-the-nineties.pdf
    • http://www.gorillawalker.com/visionary-poets-critical-survey-of-poetry-salem.pdf
    • http://www.gorillawalker.com/the-colour-of-angels-cosmology-gender-and-the-aesthetic-imagination.pdf
    • http://www.gorillawalker.com/brain-ct-scans-in-clinical-practice.pdf
    • http://www.gorillawalker.com/programming-for-tv-radio-the-internet-strategy-development-evaluation.pdf
    • http://www.gorillawalker.com/intelligent-buildings-and-building-automation-by-shengwei-wang-dec-4.pdf
    • http://www.gorillawalker.com/power-thought-cards-a-64-card-deck-box-set.pdf
    • http://www.gorillawalker.com/michelin-the-green-guide-new-england-9e-the-green-guide.pdf
    • http://www.gorillawalker.com/george-whitefield-clergyman-and-scholar-colonial-leaders.pdf
    • http://www.gorillawalker.com/damnation-kindle-edition.pdf
    • http://www.gorillawalker.com/the-saving-life-of-christ.pdf
    • http://www.gorillawalker.com/the-american-intellectual-tradition-volume-i-1630-1865-volume-1.pdf
    • http://www.gorillawalker.com/the-united-nations-high-commissioner-for-refugees-unhcr-the-politics.pdf
    • http://www.gorillawalker.com/encountering-angels-real-life-experiences-of-heavenly-intervention.pdf
    • http://www.gorillawalker.com/managing-project-quality-project-management-essential-library.pdf
    • http://www.gorillawalker.com/d-h-lawrence-travel-and-cultural-difference.pdf
    • http://www.gorillawalker.com/manliness.pdf
    • http://www.gorillawalker.com/william-shakespeare-comedies-bloom-s-modern-critical-views.pdf
    • http://www.gorillawalker.com/animal-minds-beyond-cognition-to-consciousness.pdf
    • http://www.gorillawalker.com/scalable-pattern-recognition-algorithms-applications-in-computational-biology-and-bioinformatics.pdf
    • http://www.gorillawalker.com/masterwork-studies-series-lolita-twayne-s-masterwork-studies.pdf
    • http://www.gorillawalker.com/artificial-gemstones-a-collection-of-historical-articles-on-the-production.pdf
    • http://www.gorillawalker.com/surveying-elementary-and-advanced.pdf
    • http://www.gorillawalker.com/intestacy-and-family-provision-claims-on-death-consultation-paper.pdf
    • http://www.gorillawalker.com/travels-through-syria-and-egypt-vol-ii-only-in-the.pdf
    • http://www.gorillawalker.com/real-vampires-don-t-sparkle.pdf
    • http://www.gorillawalker.com/the-portable-hannah-arendt-penguin-classics.pdf
    • http://www.gorillawalker.com/boudicca-s-heirs-women
    • 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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