Malicious PDF — malware analysis report

Static analysis result for SHA-256 731d677e02d40655…

MALICIOUS

PDF

45.5 KB Created: 2019-03-17 01:57:38 +03:00 Authoring application: mPDF 6.0
MD5: 69b155d1d2edbfd258c2252dda983c7c SHA-1: abcb2d0915118b1bfd172ffed723e61813149dab SHA-256: 731d677e02d40655da7c5722ae41d05cefe1015dbfce4bc1897bea06f4ad768b
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs pointing to external PDF files, as indicated by the PDF_SEO_LINK_FARM heuristic. While no scripts were explicitly extracted, the ML_NYX_PDF_MALICIOUS heuristic suggests malicious intent. The embedded URLs are likely used to manipulate search engine rankings or to distribute additional malicious content, potentially leading to further compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8812

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/mechanics-and-engineers-pocketbook-of-tables-rules-and-formulas-pertaining.pdf
    • http://www.gorillawalker.com/an-essay-on-the-ancient-weights-and-money-and-the.pdf
    • http://www.gorillawalker.com/survival-skills-for-the-modern-man-life-love-work-play.pdf
    • http://www.gorillawalker.com/atkins-cookbook-30-quick-and-easy-atkins-diet-recipes-for.pdf
    • http://www.gorillawalker.com/the-keig-collection-six-hundred-photographs-from-the-manx-house.pdf
    • http://www.gorillawalker.com/wild-coast-travels-on-south-america-s-untamed-edge-kindle.pdf
    • http://www.gorillawalker.com/the-essential-writings-of-mahatma-gandhi-oxford-india-paperbacks.pdf
    • http://www.gorillawalker.com/the-temptation-of-the-west.pdf
    • http://www.gorillawalker.com/planting-design-gardens-in-time-and-space.pdf
    • http://www.gorillawalker.com/survivalist-and-prepper-cookbook-kindle-edition.pdf
    • http://www.gorillawalker.com/bangkok-city-guide-map-including-bts-mrt-and-airport-links.pdf
    • http://www.gorillawalker.com/a-witch-s-trial-witch-s-path-series-book-3.pdf
    • http://www.gorillawalker.com/36-hours-of-family-dementia-a-long-sick-day-korean.pdf
    • http://www.gorillawalker.com/joslin-s-diabetes-mellitus.pdf
    • http://www.gorillawalker.com/lighting-and-the-dramatic-portrait-the-art-of-celebrity-and.pdf
    • http://www.gorillawalker.com/botanical-illustration-the-first-ten-lessons.pdf
    • http://www.gorillawalker.com/fragments-and-assemblages-forming-compilations-of-medieval-london.pdf
    • http://www.gorillawalker.com/advanced-reliability-modeling-ii-reliability-testing-and-improvement-proceedings-of.pdf
    • http://www.gorillawalker.com/after-one-hundred-years-corporate-profits-wealth-and-american-society.pdf
    • http://www.gorillawalker.com/documents-illustrative-of-the-social-and-economic-history-of-the.pdf
    • http://www.gorillawalker.com/the-return-of-ordinary-capitalism-neoliberalism-precarity-occupy.pdf
    • http://www.gorillawalker.com/advances-in-cryogenic-engineering-vol-39-part-a-and-b.pdf
    • http://www.gorillawalker.com/push-and-pull-vampire-favors-volume-1.pdf
    • http://www.gorillawalker.com/crying-blood-alafair-tucker-mysteries-book-5.pdf
    • http://www.gorillawalker.com/cell-type-specific-genotoxic-effects-of-intermittent-extremely-low-frequency.pdf
    • http://www.gorillawalker.com/the-engine-drivers-manual-how-to-prepare-fire-and-drive.pdf
    • http://www.gorillawalker.com/standards-for-educational-and-psychological-testing-1999.pdf
    • http://www.gorillawalker.com/night-on-fire.pdf
    • http://www.gorillawalker.com/final-witness-my-journey-from-the-holocaust-to-ireland.pdf
    • http://www.gorillawalker.com/the-hall-of-light-a-study-of-early-chinese-kingship.pdf
    • http://www.gorillawalker.com/sheep-sleep.pdf
    • http://www.gorillawalker.com/stories-from-pentamerone.pdf
    • http://www.gorillawalker.com/chet-atkins-the-greatest-songs-of-mister-guitar.pdf
    • http://www.gorillawalker.com/das-entwicklungspolitische-bewu-tsein-von-stipendiaten-aus-entwicklungsl-ndern-european.pdf
    • http://www.gorillawalker.com/a-history-of-civilization-volume-1.pdf
    • http://www.gorillawalker.com/6-gay-erotic-stories-volume-2-kindle-edition.pdf
    • http://www.gorillawalker.com/a-1-steak-house-favorites-better-homes-and-gardens-test.pdf
    • http://www.gorillawalker.com/seven-stories-lucky-luke-vol-50.pdf
    • http://www.gorillawalker.com/pharmacology-in-rehabilitation.pdf
    • http://www.gorillawalker.com/inflation-and-indexation-argentina-brazil-and-israel.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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