Malicious PDF — malware analysis report

Static analysis result for SHA-256 563fe1e53221c9f2…

MALICIOUS

PDF

43.7 KB Created: 2018-12-14 21:11:17 +03:00 Authoring application: FrameMaker 5.5.6p145 (via Acrobat Distiller 6.0 (Windows))
MD5: 613dce75c83453e0f0330c1cff77f8a0 SHA-1: 82da03257e282e11672f65090350c3985228ae3a SHA-256: 563fe1e53221c9f2c8ab81fe11f5065cd4593e77d4604771bd0a72b03c914ea3
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links to external PDF files, as indicated by the PDF_SEO_LINK_FARM heuristic. The ML classifier also flagged this PDF as malicious. The document body is heavily obfuscated and does not provide clear textual lures, but the sheer volume of linked PDFs suggests a link farm or distribution mechanism. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8223

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/torn-book-2-of-the-caregiver-series-kindle-edition.pdf
    • http://www.gorillawalker.com/a-walk-through-the-past-people-and-places-of-florence.pdf
    • http://www.gorillawalker.com/guns-loads-and-hunting-tips.pdf
    • http://www.gorillawalker.com/the-sociopath-at-the-breakfast-table-recognizing-and-dealing-with.pdf
    • http://www.gorillawalker.com/the-thousand-orcs-forgotten-realms-the-hunter-s-blades-trilogy.pdf
    • http://www.gorillawalker.com/marketing-the-arts-a-fresh-approach.pdf
    • http://www.gorillawalker.com/la-guida-completa-agli-uomini-all-allenamento-dei-muscoli-pelvici.pdf
    • http://www.gorillawalker.com/holidays-then-and-now-orange-band-06-collins-big-cat.pdf
    • http://www.gorillawalker.com/thyroid-how-to-heal-your-thyroid-and-cure-symptoms-forever.pdf
    • http://www.gorillawalker.com/lone-rider.pdf
    • http://www.gorillawalker.com/study-of-biological-desalination-phenomena-salt-transport-mechanisms-of-selective.pdf
    • http://www.gorillawalker.com/hepatitis-b-prevention-and-treatment-selection-with-cd-rom-1.pdf
    • http://www.gorillawalker.com/triathlon-optimierung-von-ausr-stung-technik-german-edition.pdf
    • http://www.gorillawalker.com/burmese-cats-2013-wall-calendar-30413-12.pdf
    • http://www.gorillawalker.com/mexican-americans-new-immigrants-chelsea-house.pdf
    • http://www.gorillawalker.com/saint-louis-illustrated-nineteenth-century-engravings-and-lithographs-of-a.pdf
    • http://www.gorillawalker.com/travels-to-discover-the-source-of-the-nile-in-the.pdf
    • http://www.gorillawalker.com/the-fracking-war.pdf
    • http://www.gorillawalker.com/cycling-canada-bicycle-touring-in-canada-the-active-travel-series.pdf
    • http://www.gorillawalker.com/face-cards-b07a-emotion-expression-flash-cards-and-cd-rom.pdf
    • http://www.gorillawalker.com/the-death-of-wcw-wrestlecrap-and-figure-four-weekly-present.pdf
    • http://www.gorillawalker.com/c-beebies-colouring-fun.pdf
    • http://www.gorillawalker.com/poetry-and-song-in-late-eighteenth-century-germany-a-study.pdf
    • http://www.gorillawalker.com/non-discrimination-in-international-tax-law-series-on-international-taxation.pdf
    • http://www.gorillawalker.com/the-u-s-japan-alliance-past-present-and-future.pdf
    • http://www.gorillawalker.com/haiku-poetry.pdf
    • http://www.gorillawalker.com/gary-s-got-new-parents-an-abdl-age-play-adventure.pdf
    • http://www.gorillawalker.com/sleeping-with-houdini-american-poets-continuum.pdf
    • http://www.gorillawalker.com/apocal-pticos-e-integrados-spanish-edition.pdf
    • http://www.gorillawalker.com/angel-intelligence-how-your-consciousness-determines-which-angels-come-into.pdf
    • http://www.gorillawalker.com/the-druzes-in-the-jewish-state-a-brief-history-social.pdf
    • http://www.gorillawalker.com/birdwing.pdf
    • http://www.gorillawalker.com/teen-inc.pdf
    • http://www.gorillawalker.com/droit-p-nal-g-n-ral-2016-cours-french-edition.pdf
    • http://www.gorillawalker.com/arabella.pdf
    • http://www.gorillawalker.com/brennendes-land-roman-german-edition.pdf
    • http://www.gorillawalker.com/unnatural-instinct-jessica-coran-novels.pdf
    • http://www.gorillawalker.com/cooking-the-east-african-way-easy-menu-ethnic-cookbooks.pdf
    • http://www.gorillawalker.com/the-puzzle-of-god.pdf
    • http://www.gorillawalker.com/cities-citizens-ancient-greece-heinemann-library.pdf
    • http://www.gorillawalker.com/hol
    • 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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