Malicious PDF — malware analysis report

Static analysis result for SHA-256 8812193c332b276e…

MALICIOUS

PDF

42.6 KB Created: 2018-12-15 20:07:33 +03:00 Authoring application: Word (via Mac OS X 10.7.5 Quartz PDFContext) First seen: 2019-03-10
MD5: 28bfd9a530c7f4bc62c5350466f0d870 SHA-1: 619e8f3b750a8a5db57ac7bd9fb791a5d1b9952e SHA-256: 8812193c332b276ed843d721d7a503f307659942c56c0b5a69ed5ba51a9847d4
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a heuristic firing for a 'PDF_SEO_LINK_FARM', indicating a large number of embedded external links. While no scripts were explicitly extracted, the nature of the embedded links suggests an attempt to manipulate search engine results or distribute content from these URLs. The ML classifier also flagged the PDF as malicious with high confidence.

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/four-symphonies-in-full-score-dover-music-scores.pdf In PDF document text
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    • http://www.gorillawalker.com/post-traumatic-stress-disorder-a-police-officers-report.pdfIn PDF document text
    • http://www.gorillawalker.com/conceptual-and-structural-design-of-buildings-made-of-lightweight-and.pdfIn PDF document text
    • http://www.gorillawalker.com/marine-ssb-radio-for-idi-yachts.pdfIn PDF document text
    • http://www.gorillawalker.com/natural-disasters-recitation-manual-course-geol-0820.pdfIn PDF document text
    • http://www.gorillawalker.com/taken-by-the-frat-boys.pdfIn PDF document text
    • http://www.gorillawalker.com/treatise-on-invertebrate-paleontology-pt-n-mollusca-6-bivalvia-vol.pdfIn PDF document text
    • http://www.gorillawalker.com/the-chapman-collection-curtains-and-draperies-window-treatments-vol-1.pdfIn PDF document text
    • http://www.gorillawalker.com/try-anthralin-or-nitrogen-mustard-for-alopecia-areata-old-time.pdfIn PDF document text
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    • http://www.gorillawalker.com/gay-s-anatomy-two-man-exam-medical-fetish-first-time.pdfIn PDF document text
    • http://www.gorillawalker.com/do-business-with-people-you-can-trust-balancing-profits-and.pdfIn PDF document text
    • http://www.gorillawalker.com/cucina-siciliana-le-ricette-dello-chef-ricette-semplici-e-veloci.pdfIn PDF document text
    • http://www.gorillawalker.com/the-superstition-of-divorce-by-g-k-chesterton.pdfIn PDF document text
    • http://www.gorillawalker.com/bridges-superstructures.pdfIn PDF document text
    • http://www.gorillawalker.com/physics-of-climate.pdfIn PDF document text
    • http://www.gorillawalker.com/loki-wolf-kindle-edition.pdfIn PDF document text
    • http://www.gorillawalker.com/cinema-before-cinema-the-origins-of-scientific-cinematography.pdfIn PDF document text
    • http://www.gorillawalker.com/the-school-for-good-and-evil-series-complete-box-set.pdfIn PDF document text
    • http://www.gorillawalker.com/the-ethiopian-jewish-exodus-narratives-of-the-journey-routledge-studies.pdfIn PDF document text
    • http://www.gorillawalker.com/charlesworth-percy-on-negligence-5th-supplement-common-law-library.pdfIn PDF document text
    • http://www.gorillawalker.com/eva-s-tale.pdfIn PDF document text
    • http://www.gorillawalker.com/managing-airports-4th-edition-an-international-perspective.pdfIn PDF document text
    • http://www.gorillawalker.com/mergers-and-acquisitions-strategy-for-consolidations-roll-up-roll-out.pdfIn PDF document text
    • http://www.gorillawalker.com/razi-master-of-quranic-interpretation-and-theological-reasoning.pdfIn PDF document text
    • http://www.gorillawalker.com/georgian-dance-party-22-mainly-18th-century-dances.pdfIn PDF document text
    • http://www.gorillawalker.com/cicero-selected-orations-and-letters.pdfIn PDF document text
    • http://www.gorillawalker.com/the-joy-in-loving-a-guide-to-daily-living-compass.pdfIn PDF document text
    • http://www.gorillawalker.com/cases-for-paces.pdfIn PDF document text
    • http://www.gorillawalker.com/2010-student-literary-awards-anthology-winning-art-poems-and-letters.pdfIn PDF document text
    • http://www.gorillawalker.com/batteries-not-included.pdfIn PDF document text
    • http://www.gorillawalker.com/moonshine-how-to-make-moonshine-master-the-art-of-making.pdfIn PDF document text
    • http://www.gorillawalker.com/b-b-king-there-is-always-one-more-time.pdfIn PDF document text
    • http://www.gorillawalker.com/kirkpinar-oil-wrestling-the-world-s-oldest-sport-competition-kirkpinar.pdfIn PDF document text
    • http://www.gorillawalker.com/deception-kindle-edition.pdfIn PDF document text
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    • http://www.gorillawalker.com/bookkeeping-guidebook-a-practitioner-s-guide.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://www.aiim.org/pdfa/ns/extension/In PDF document text
    • http://www.aiim.org/pdfa/ns/schema#In PDF document text
    • http://www.aiim.org/pdfa/ns/property#In PDF document text
    • http://www.aiim.org/pdfa/ns/id/In PDF document text

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