Malicious PDF — malware analysis report

Static analysis result for SHA-256 efb1efb2420a2b8e…

MALICIOUS

PDF

42.1 KB Created: 2018-11-15 19:36:02 +03:00 Authoring application: XPP (via Adobe Acrobat Pro DC 15.23.20053)
MD5: d991096d27c21aed4ce7d67ad14f499c SHA-1: bf0729649c3f7eec25625eb7c61232ec4cf44d94 SHA-256: efb1efb2420a2b8e64ecabe5c800c73556166b2b71c4ebaa4013229447ce78f5
90 Risk Score

Malware Insights

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

The PDF was flagged by a machine learning classifier and contains a large number of embedded external links, a technique often used for SEO manipulation or to host malicious content. The document body is heavily obfuscated and does not provide clear textual lures. No scripts were extracted from this sample. The primary attack pattern observed is the mass linking to external PDF resources.

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/private-equity-exits-a-practical-analysis.pdf
    • http://www.gorillawalker.com/the-36-hour-day-5th-edition-a-family-guide-to.pdf
    • http://www.gorillawalker.com/industrial-organisation-of-high-technology-markets-the-internet-and-information.pdf
    • http://www.gorillawalker.com/a-peace-to-end-all-peace-the-fall-of-the.pdf
    • http://www.gorillawalker.com/return-to-tyringham-park.pdf
    • http://www.gorillawalker.com/while-the-gods-play-shaiva-oracles-and-predictions-on-the.pdf
    • http://www.gorillawalker.com/design-of-geosynchronous-spacecraft.pdf
    • http://www.gorillawalker.com/his-wicked-ways.pdf
    • http://www.gorillawalker.com/business-organizations-law-hornbook.pdf
    • http://www.gorillawalker.com/one-hundred-red-hot-years.pdf
    • http://www.gorillawalker.com/high-cycle-fatigue-of-structural-materials-symposium-proceedings-in-honor.pdf
    • http://www.gorillawalker.com/sacred-scripture-a-short-history-of-interpretation.pdf
    • http://www.gorillawalker.com/managing-supply-chains-on-the-silk-road-strategy-performance-and.pdf
    • http://www.gorillawalker.com/until-you-are-dead-five-star-first-edition-mystery.pdf
    • http://www.gorillawalker.com/the-lean-memory-jogger-for-healthcare-lean-enterprise-kindle-edition.pdf
    • http://www.gorillawalker.com/alaska-time-2005-weekly-calendar.pdf
    • http://www.gorillawalker.com/pickett-or-pettigrew-north-carolina-at-gettysburg-a-historical-monograph.pdf
    • http://www.gorillawalker.com/royal-scots-in-the-gulf-1st-battalion-the-royal-scots.pdf
    • http://www.gorillawalker.com/master-asl-level-one-with-dvd.pdf
    • http://www.gorillawalker.com/clemente-the-true-legacy-of-an-undying-hero.pdf
    • http://www.gorillawalker.com/le-cid-overture-full-score-a6996.pdf
    • http://www.gorillawalker.com/chromosomal-instability-in-cancer-cells-recent-results-in-cancer-research.pdf
    • http://www.gorillawalker.com/alchemy-an-illustrated-a-to-z.pdf
    • http://www.gorillawalker.com/the-kidnapped-king-mm-bdsm-erotic-romance.pdf
    • http://www.gorillawalker.com/el-dolor-que-nos-une-nuevos-tiempos-spanish-edition.pdf
    • http://www.gorillawalker.com/book-1-genetics-and-development-for-the-pediatric-anesthesiologist-pediatric.pdf
    • http://www.gorillawalker.com/plundered-nations-successes-and-failures-in-natural-resource-extraction.pdf
    • http://www.gorillawalker.com/fun-e-farm-todaysgirls-com-12.pdf
    • http://www.gorillawalker.com/shelves-and-cabinets-home-repair-and-improvement.pdf
    • http://www.gorillawalker.com/liberalism-and-democracy-radical-thinkers.pdf
    • http://www.gorillawalker.com/tourist-experience-and-fulfilment-insights-from-positive-psychology-advances-in.pdf
    • http://www.gorillawalker.com/el-expreso-polar.pdf
    • http://www.gorillawalker.com/we-exalt-your-name-accompaniment-performance-track-daywind-soundtracks-contemporary.pdf
    • http://www.gorillawalker.com/gran-atlas-del-vino-spanish-edition.pdf
    • http://www.gorillawalker.com/the-woman-who-is-the-midnight-wind-stories.pdf
    • http://www.gorillawalker.com/a-qui-appartient-le-corps-humain-medecine-politique-et-droit.pdf
    • http://www.gorillawalker.com/taking-his-brat-taboo-forbidden-erotic-romance.pdf
    • http://www.gorillawalker.com/selection-of-potency-in-homeopathic-prescribing-and-planetary-herbalism.pdf
    • http://www.gorillawalker.com/cohousing-a-contemporary-approach-to-housing-ourselves.pdf
    • http://www.gorillawalker.com/comptia-a-220-801-220-802-in-depth.pdf
    • http://www.gorillawalker.com/while-the-gods-play-shaiva-oracles-and-predictions-on-the.p
    • 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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