Malicious PDF — malware analysis report

Static analysis result for SHA-256 609e6e8f3a43d68d…

MALICIOUS

PDF

42.7 KB Created: 2018-12-15 20:54:59 +03:00 Authoring application: AH XSL Formatter V6.1 MR5a for Windows (x64) : 6.1.10.15867 (via Antenna House PDF Output Library 6.1.472 (Windows (x64)))
MD5: 9d1dbcebb338e8ef631d3f5029e492f7 SHA-1: f7cf8c71a378a9346b24d180a1ee8a53f41213f3 SHA-256: 609e6e8f3a43d68d8639a4fc03200dbccc44c56e8ff7f8350e0408e230c989dd
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The critical PDF_SEO_LINK_FARM heuristic indicates the PDF contains a large number of external links, with the first identified URL being http://www.gorillawalker.com/benjamin-bunnys-colours-beatrix-potter-board-books.pdf. This suggests the document's primary purpose is to redirect users to a vast collection of other PDFs hosted on the same domain. The ML classifier also flagged the document as malicious. While no scripts were extracted, the sheer volume of links points towards a coordinated effort to manipulate search engine results or distribute content.

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/benjamin-bunnys-colours-beatrix-potter-board-books.pdf
    • http://www.gorillawalker.com/beyond-the-decade-of-the-brain-neuroprotection-in-parkinson-s.pdf
    • http://www.gorillawalker.com/ragaglitazar-lowers-glucose-triglycerides-in-type-2-patients-investigational-diabetes.pdf
    • http://www.gorillawalker.com/the-works-of-george-gissing-18-books-kindle-edition.pdf
    • http://www.gorillawalker.com/the-big-clock-a-kid-s-guide-to-munich-germany.pdf
    • http://www.gorillawalker.com/the-perfect-poison-arcane-society-series.pdf
    • http://www.gorillawalker.com/the-savage-home.pdf
    • http://www.gorillawalker.com/the-shell-desk-diary-for-1980-with-photographs-and-engravingsshowing.pdf
    • http://www.gorillawalker.com/the-red-fist-of-rome.pdf
    • http://www.gorillawalker.com/kyrgyzstan-cultures-of-the-world.pdf
    • http://www.gorillawalker.com/the-mummifier-s-daughter-series-boxed-set-complete-full-length.pdf
    • http://www.gorillawalker.com/elizabeth-lowell-cd-collection-1-desert-rain-lover-in-the.pdf
    • http://www.gorillawalker.com/burnt-sea-a-seabound-prequel-seabound-chronicles-book-0.pdf
    • http://www.gorillawalker.com/a-guide-to-the-gold-mines-of-kansas-containing-an.pdf
    • http://www.gorillawalker.com/john-sinclair-folge-0812-blutzoll-einer-druidin-2-teil-german.pdf
    • http://www.gorillawalker.com/the-dimensions-of-parking-d85.pdf
    • http://www.gorillawalker.com/come-unto-him-from-messiah-high-voice-vocal-solo-sheet.pdf
    • http://www.gorillawalker.com/q-a-a-day-5-year-journal.pdf
    • http://www.gorillawalker.com/the-complete-concrete.pdf
    • http://www.gorillawalker.com/all-saints-the-unofficial-book.pdf
    • http://www.gorillawalker.com/who-is-jesus-linking-the-historical-jesus-with-the-christ.pdf
    • http://www.gorillawalker.com/human-trafficking-human-security-and-the-balkans-the-security-continuum.pdf
    • http://www.gorillawalker.com/anderson-s-ohio-school-law-guide-2009-edition-3-volume.pdf
    • http://www.gorillawalker.com/memoirs-of-a-rebel-princess.pdf
    • http://www.gorillawalker.com/the-diva-code-miss-piggy-on-life-love-and-the.pdf
    • http://www.gorillawalker.com/beyond-infinity.pdf
    • http://www.gorillawalker.com/scandanavia-the-rough-guide-fourth-edition-1997-4th-ed.pdf
    • http://www.gorillawalker.com/reproductive-endocrinology-and-infertility-integrating-modern-clinical-and-laboratory-practice.pdf
    • http://www.gorillawalker.com/burgmuller-czerny-hanon-41-piano-studies-selected-for-technique-and.pdf
    • http://www.gorillawalker.com/perfect-digital-photographs-in-a-snap.pdf
    • http://www.gorillawalker.com/seraphim-the-changelings.pdf
    • http://www.gorillawalker.com/physical-computing-sensing-and-controlling-the-physical-world-with-computers.pdf
    • http://www.gorillawalker.com/eternal-flame-guardians-volume-1.pdf
    • http://www.gorillawalker.com/massage-therapy-an-approach-to-treatments.pdf
    • http://www.gorillawalker.com/the-darker-carnival-the-markhat-files-kindle-edition.pdf
    • http://www.gorillawalker.com/kaplan-act-2007-comprehensive-program.pdf
    • http://www.gorillawalker.com/macroeconomic-forecasting-a-practical-guide.pdf
    • http://www.gorillawalker.com/designing-with-light-an-introduction-to-stage-lighting-4th-edition.pdf
    • http://www.gorillawalker.com/eternal-brand.pdf
    • http://www.gorillawalker.com/estudios-soteriol-gicos-la-salvaci-n-cuadr-ple-y-la.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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