Malicious PDF — malware analysis report

Static analysis result for SHA-256 5bc9f931c9e47597…

MALICIOUS

PDF

43.8 KB Created: 2018-12-15 20:00:48 +03:00 Authoring application: FrameMaker 5.5.6p145 (via Acrobat Distiller 6.0 (Windows))
MD5: 112fd1eea83d5349b8aa278faef20cf4 SHA-1: 5794453589f3958998e64778ecf4d05b39529888 SHA-256: 5bc9f931c9e47597aef21158a6a6084d7a698672e6b2d41bca85064a59d89c23
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. While the document body is heavily obfuscated, the presence of numerous links to external PDF files suggests a malicious intent, possibly for SEO manipulation or to redirect users to malicious content. The ML classifier also flagged the document as malicious. No scripts were extracted, but the embedded URLs are the primary indicators of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9171

Heuristics 3

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/molto-agitato-the-mayhem-behind-the-music-at-the-metropolitan.pdf
    • http://www.gorillawalker.com/encounters-in-virology.pdf
    • http://www.gorillawalker.com/the-cultural-contradictions-of-motherhood.pdf
    • http://www.gorillawalker.com/the-hungry-tide-a-novel-kindle-edition.pdf
    • http://www.gorillawalker.com/designs-and-their-codes-cambridge-tracts-in-mathematics.pdf
    • http://www.gorillawalker.com/embryology-of-flowering-plants-terminology-and-concepts-vol-3-reproductive.pdf
    • http://www.gorillawalker.com/the-effective-head-office-overview-report-the-institute-of-management.pdf
    • http://www.gorillawalker.com/a-legacy-so-enduring-an-account-of-the-administration-building.pdf
    • http://www.gorillawalker.com/enso-zen-circles-of-enlightenment.pdf
    • http://www.gorillawalker.com/how-to-see-the-world.pdf
    • http://www.gorillawalker.com/value-based-marketing-marketing-strategies-for-corporate-growth-and-shareholder.pdf
    • http://www.gorillawalker.com/digital-television-dvb-t-cofdm-and-atsc-8-vsb.pdf
    • http://www.gorillawalker.com/cuisine-sans-cholesterol-french-edition.pdf
    • http://www.gorillawalker.com/sinful-desires-complete-series.pdf
    • http://www.gorillawalker.com/the-brain-journey-through-the-universe-inside-your-head-inquire.pdf
    • http://www.gorillawalker.com/baking-2-pies-tarts-and-pastries-hardcover.pdf
    • http://www.gorillawalker.com/geriatric-nursing-review-syllabus.pdf
    • http://www.gorillawalker.com/collins-primary-maths-answer-book-year-4.pdf
    • http://www.gorillawalker.com/garments-of-skin.pdf
    • http://www.gorillawalker.com/the-patellofemoral-joint-state-of-the-art-in-evaluation-and.pdf
    • http://www.gorillawalker.com/365-days-of-hope-encouragement-for-those-facing-loss-pain.pdf
    • http://www.gorillawalker.com/vegetable-gardening-organic-vegetable-gardening-for-beginners-how-to-start.pdf
    • http://www.gorillawalker.com/heroes-with-hardons-the-big-book-of-class-comics.pdf
    • http://www.gorillawalker.com/the-cost-effective-use-of-leeches-and-other-musings-of.pdf
    • http://www.gorillawalker.com/kitchen-for-kids.pdf
    • http://www.gorillawalker.com/the-gentlemen-s-book-of-etiquette-and-manual-of-politeness.pdf
    • http://www.gorillawalker.com/sonate-for-c-trumpet-and-piano.pdf
    • http://www.gorillawalker.com/iq-testing-increase-your-vocabulary-and-develop-your-powers-of.pdf
    • http://www.gorillawalker.com/cardiac-nursing-by-susan-l-woods-sep-25-2009.pdf
    • http://www.gorillawalker.com/usted-puede-ser-su-propio-brujo-conocimientos-pr-cticos-de.pdf
    • http://www.gorillawalker.com/caffeine-and-health-research.pdf
    • http://www.gorillawalker.com/the-book-of-unknown-americans-a-novel-vintage-contemporaries.pdf
    • http://www.gorillawalker.com/guide-to-stockholm.pdf
    • http://www.gorillawalker.com/fairytales-slashed-volume-two.pdf
    • http://www.gorillawalker.com/kismet-destiny-three-years-teaching-in-turkey-years-two-and.pdf
    • http://www.gorillawalker.com/letters-from-the-battle-fields-of-paraguay.pdf
    • http://www.gorillawalker.com/cut-to-the-chase.pdf
    • http://www.gorillawalker.com/how-to-go-to-confession-when-you-don-t-know.pdf
    • http://www.gorillawalker.com/central-asia-travels-in-cashmere-little-tibet-and-central-asia.pdf
    • http://www.gorillawalker.com/over-the-river-and-through-the-wood.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/

Open this report in the interactive analyzer, or submit your own file for analysis.