Malicious PDF — malware analysis report

Static analysis result for SHA-256 d549eea041d0fa78…

MALICIOUS

PDF

44.9 KB Created: 2018-12-15 08:54:00 +03:00 Authoring application: Adobe InDesign CS5 (7.0) (via Acrobat Distiller 9.5.3 (Macintosh))
MD5: 4195ba93bf92691b5c58b243c048927b SHA-1: c1c06d6e86312f51e8c4a0060dc8b1482f02b66f SHA-256: d549eea041d0fa78a83dce562b545611e44ee5b2e50982e880877ceb0ddb8d88
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.001 PowerShell

The PDF was flagged by a machine learning classifier and contains a large number of external links to PDF files hosted on the same domain. This behavior is indicative of a link farm, often used for SEO manipulation or to distribute malicious content. The ML classifier's high score supports the malicious verdict. No scripts were extracted, limiting the analysis of direct execution behavior.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8451

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/construction-management-jumpstart.pdf
    • http://www.gorillawalker.com/russkaia-atlantida-poeziia-russkoi-emigratsii-mladshee-pokolenie-pervoi-volny-russian.pdf
    • http://www.gorillawalker.com/the-bee-and-the-eagle-napoleonic-france-and-the-end.pdf
    • http://www.gorillawalker.com/the-richest-man-in-babylon-your-coach-in-a-box.pdf
    • http://www.gorillawalker.com/nest-of-eagles-messerschmitt-production-and-flight-testing-at-regensburg.pdf
    • http://www.gorillawalker.com/develop-your-presentation-skills-build-your-confidence-be-charismatic-give.pdf
    • http://www.gorillawalker.com/set-theory-and-logic-bystoll.pdf
    • http://www.gorillawalker.com/bibliographic-data-on-fossil-trichoptera-from-the-upper-mesozoic-and.pdf
    • http://www.gorillawalker.com/torkel-s-chosen-a-world-beyond-book-1-kindle-edition.pdf
    • http://www.gorillawalker.com/wwf-the-official-book-of-the-game.pdf
    • http://www.gorillawalker.com/bishop-curtis-of-wilmington.pdf
    • http://www.gorillawalker.com/catecismo-juvenil-children-s-catechism-spanish-edition.pdf
    • http://www.gorillawalker.com/touch-of-silver-sanguine-series-no-3.pdf
    • http://www.gorillawalker.com/the-annotated-hans-christian-andersen-the-annotated-books.pdf
    • http://www.gorillawalker.com/anthem-s-fall.pdf
    • http://www.gorillawalker.com/financial-management-for-nurse-managers-and-executives-finkler-financial-management.pdf
    • http://www.gorillawalker.com/25-science-mini-books-for-emergent-readers-build-literacy-with.pdf
    • http://www.gorillawalker.com/somewhere-towards-the-end-a-memoir.pdf
    • http://www.gorillawalker.com/the-south-west-coast-path-minehead-to-padstow-national-trail.pdf
    • http://www.gorillawalker.com/100-under-500-calorie-meals-healthy-and-tasty-recipes.pdf
    • http://www.gorillawalker.com/festivals-my-chinese-new-year-little-nippers-festivals-little-nippers.pdf
    • http://www.gorillawalker.com/wicked-2-legacy-spellbound.pdf
    • http://www.gorillawalker.com/first-time-tongue-a-bisexual-ff-coed-erotica-pi-alpha.pdf
    • http://www.gorillawalker.com/la-vida-de-una-abeja-a-bee-s-life-time.pdf
    • http://www.gorillawalker.com/the-budget-foodie-hong-kong-bravo-your-city-book-3.pdf
    • http://www.gorillawalker.com/pakistan-webster-s-timeline-history-1986-1996-download-pdf-digital.pdf
    • http://www.gorillawalker.com/a-field-guide-to-the-birds-of-china.pdf
    • http://www.gorillawalker.com/land-and-finance-for-affordable-housing-the-complementary-roles-of.pdf
    • http://www.gorillawalker.com/surprising-sharks-nature-storybooks.pdf
    • http://www.gorillawalker.com/spain-in-our-hearts-espana-en-el-corazon-new-directions.pdf
    • http://www.gorillawalker.com/the-guitar-music-of-cuba.pdf
    • http://www.gorillawalker.com/what-happy-couples-know-kindle-edition.pdf
    • http://www.gorillawalker.com/the-psychotherapy-of-schizophrenia.pdf
    • http://www.gorillawalker.com/step-back-science-turn-on-the-tv.pdf
    • http://www.gorillawalker.com/guinness-is-guinness-the-colourful-story-of-a-black-and.pdf
    • http://www.gorillawalker.com/usagi-yojimbo-saga-volume-6.pdf
    • http://www.gorillawalker.com/process-characterization-and-optimization-six-sigma-research-institute.pdf
    • http://www.gorillawalker.com/designing-surveys-that-work-a-step-by-step-guide.pdf
    • http://www.gorillawalker.com/pizza-party-hello-reader-level-1.pdf
    • http://www.gorillawalker.com/klaviersonate-in-c-dur-opus-33-no-1-piano-sonata.pdf
    • http://www.gorillawalker.com/the-richest-man-in-baby
    • 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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