Malicious PDF — malware analysis report

Static analysis result for SHA-256 ef7130b659af0c73…

MALICIOUS

PDF

41.6 KB Created: 2019-03-17 08:16:22 +03:00 Authoring application: FrameMaker 9.0 (via Acrobat Distiller 9.4.5 (Windows))
MD5: c77629a3308d9139bda43ff60cee9995 SHA-1: ed50fbf7c994cd7d777075cd9771de967e1dff05 SHA-256: ef7130b659af0c73eead583513cd17f183d7225f4baef037842dd051bc0dffdd
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links to external PDF files, as indicated by the PDF_SEO_LINK_FARM heuristic. The ML classifier also flagged this PDF as malicious with high confidence. The document body is heavily obfuscated and does not provide clear textual content, but the presence of numerous links suggests a malicious intent, possibly for SEO manipulation or to distribute further malware. 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/victory-lane-shady-falls-series-book-1.pdf
    • http://www.gorillawalker.com/rewild.pdf
    • http://www.gorillawalker.com/reptiles-of-rancho-grande-and-vicinity-estado-aragua-venezuela-museum.pdf
    • http://www.gorillawalker.com/journal-of-chemical-physics-vol-47-no-1-1-july.pdf
    • http://www.gorillawalker.com/berlitz-east-european-phrase-book.pdf
    • http://www.gorillawalker.com/delmar-s-dental-assisting-video-1-introduction-to-chairside-assisting.pdf
    • http://www.gorillawalker.com/business-analytics-for-managers-use-r.pdf
    • http://www.gorillawalker.com/vietnamese-colonial-republican-the-political-vision-of-vu-trong-phung.pdf
    • http://www.gorillawalker.com/the-phantom-menace-star-wars-episode-i.pdf
    • http://www.gorillawalker.com/history-beyond-the-text-a-student-s-guide-to-approaching.pdf
    • http://www.gorillawalker.com/the-book-of-lineage.pdf
    • http://www.gorillawalker.com/so-runs-the-world.pdf
    • http://www.gorillawalker.com/policing-stalin-s-socialism-repression-and-social-order-in-the.pdf
    • http://www.gorillawalker.com/dod-s-improper-use-of-first-and-business-class-airline.pdf
    • http://www.gorillawalker.com/large-scale-neuronal-theories-of-the-brain-computational-neuroscience.pdf
    • http://www.gorillawalker.com/the-lady-taken-part-3.pdf
    • http://www.gorillawalker.com/building-fortress-europe-the-polish-ukrainian-frontier-democracy-citizenship-and.pdf
    • http://www.gorillawalker.com/outsourcing-kindle-edition.pdf
    • http://www.gorillawalker.com/the-heritage-of-the-bhikkhu-the-buddhist-tradition-of-service.pdf
    • http://www.gorillawalker.com/symphony-no-40-in-g-minor-k-550-full-score.pdf
    • http://www.gorillawalker.com/on-politics-and-parks-kathie-and-ed-cox-jr-books.pdf
    • http://www.gorillawalker.com/rugby-union-for-dummies-kindle-edition.pdf
    • http://www.gorillawalker.com/the-complete-golden-dawn-cipher-manuscript-golden-dawn-studies-no.pdf
    • http://www.gorillawalker.com/the-yoga-adventure-for-children-playing-dancing-moving-breathing-relaxing.pdf
    • http://www.gorillawalker.com/sheet-music-bewitched-from-1957-musical-pal-joey-rita-hayworth.pdf
    • http://www.gorillawalker.com/shah-abbas-the-ruthless-king-who-became-an-iranian-legend.pdf
    • http://www.gorillawalker.com/big-cats-and-other-animals-their-beauty-dignity-and-survival.pdf
    • http://www.gorillawalker.com/organ-concerto-in-b-flat-major-hwv-290-full-score.pdf
    • http://www.gorillawalker.com/christ-in-isaiah-kindle-edition.pdf
    • http://www.gorillawalker.com/canada-s-constitutional-monarchy.pdf
    • http://www.gorillawalker.com/class-meetings-that-matter-k-5-a-year-s-worth.pdf
    • http://www.gorillawalker.com/contemporary-s-ged-social-studies-contemporary-s-ged-satellite-series.pdf
    • http://www.gorillawalker.com/catskill-summer-things.pdf
    • http://www.gorillawalker.com/victorian-address-book.pdf
    • http://www.gorillawalker.com/perceptual-and-emotional-embodiment-foundations-of-embodied-cognition-volume-1.pdf
    • http://www.gorillawalker.com/the-subject-of-freedom-kant-levinas-commonalities-fup.pdf
    • http://www.gorillawalker.com/writer-s-choice-grammar-practice-workbook-grade-8.pdf
    • http://www.gorillawalker.com/reading-television-new-accents.pdf
    • http://www.gorillawalker.com/photographing-your-family-and-all-the-kids-and-friends-and.pdf
    • http://www.gorillawalker.com/elgin-dufftown-and-surrounding-area-landranger-maps.pdf
    • http://www.gorillawalker.com/delmar-s-dental-assisting-v
    • 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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