Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d1a3087f7113bca…

MALICIOUS

PDF

47.8 KB Created: 2019-03-17 05:10:07 +03:00 Authoring application: PDF CoDe 2015.5473 (c) 2002-2015 European Commission
MD5: ebefce6327b9d3626ee2e9e124361a81 SHA-1: 5530ef4561b329a8f8965c29317119cba838a889 SHA-256: 3d1a3087f7113bca740ffd7c953787c36efad34ec333f281b0dac644c763741e
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file was flagged by a machine learning classifier as malicious and contains a large number of embedded external links, a technique often used for SEO manipulation or to host malicious content. The document body itself is heavily obfuscated and does not provide clear textual content, but the presence of numerous links to PDFs on the same domain suggests a coordinated effort to distribute content or manipulate search results. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8263

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/the-e-z-map-makati-philippines.pdf
    • http://www.gorillawalker.com/histoire-de-la-criminologie-i-les-racines-psycripol-t-3.pdf
    • http://www.gorillawalker.com/dream-on-the-challenge-to-break-par-in-a-year.pdf
    • http://www.gorillawalker.com/des-stories-faces-and-voices-of-people-exposed-to-diethylstilbestrol.pdf
    • http://www.gorillawalker.com/the-illegal-war-on-libya.pdf
    • http://www.gorillawalker.com/selected-lenders-providing-commercial-and-residential-construction-loans-in-the.pdf
    • http://www.gorillawalker.com/healing-pet-loss-practical-steps-for-coping-and-comforting-messages.pdf
    • http://www.gorillawalker.com/memoire-pour-les-abbes-prieurs-et-religieux-des-abbayes-de.pdf
    • http://www.gorillawalker.com/photovoltaic-laboratory-safety-code-compliance-and-commercial-off-the-shelf.pdf
    • http://www.gorillawalker.com/communist-neo-traditionalism-work-and-authority-in-chinese-industry.pdf
    • http://www.gorillawalker.com/models-of-brief-psychodynamic-therapy-a-comparative-approach.pdf
    • http://www.gorillawalker.com/grandma-catapano-s-sunday-gravy-kindle-edition.pdf
    • http://www.gorillawalker.com/analysis-of-multimedia-information-systems-for-the-u-s-coast.pdf
    • http://www.gorillawalker.com/oscan-in-southern-italy-and-sicily-evaluating-language-contact-in.pdf
    • http://www.gorillawalker.com/schumann-complete-works-volume-vii.pdf
    • http://www.gorillawalker.com/the-arthritic-s-cook-book.pdf
    • http://www.gorillawalker.com/bioethics-principles-issues-and-cases-2nd-edition.pdf
    • http://www.gorillawalker.com/phunny-stuph-publisher-prufrock-press-inc.pdf
    • http://www.gorillawalker.com/international-handbook-of-urban-policy-volume-2-issues-in-the.pdf
    • http://www.gorillawalker.com/experimental-cartography-report-on-the-oxford-symposium-october-1963.pdf
    • http://www.gorillawalker.com/keep-your-friends-close.pdf
    • http://www.gorillawalker.com/gsd-platform-5.pdf
    • http://www.gorillawalker.com/my-travel-journal-colored-suitcases-travel-planner-journal-6-x.pdf
    • http://www.gorillawalker.com/look-closer-ocean.pdf
    • http://www.gorillawalker.com/the-american-pastry-cook-a-book-of-perfected-receipts-scholar.pdf
    • http://www.gorillawalker.com/jubilee-one-man-s-big-bold-and-very-very-loud.pdf
    • http://www.gorillawalker.com/iec-60335-2-94-ed-2-0-en-2002-household.pdf
    • http://www.gorillawalker.com/server-sk0-003.pdf
    • http://www.gorillawalker.com/lebanon-a-model-of-consociational-conflict-europ-ische-hochschulschriften-european.pdf
    • http://www.gorillawalker.com/the-technology-of-plasticizers-spe-monographs.pdf
    • http://www.gorillawalker.com/hillel-the-teacher-of-righteousness-the-dead-sea-scrolls-christian.pdf
    • http://www.gorillawalker.com/french-defense-2-new-and-forgotten-ideas-v-2.pdf
    • http://www.gorillawalker.com/tragedy-after-nietzsche-rapturous-superabundance.pdf
    • http://www.gorillawalker.com/an-infinity-of-graces-cecil-ross-pinsent-an-english-architect.pdf
    • http://www.gorillawalker.com/aircraft-construction-repair-and-inspection.pdf
    • http://www.gorillawalker.com/ephesians-our-blueprint-for-maturity-kindle-edition.pdf
    • http://www.gorillawalker.com/beautiful-suffering-photography-and-the-traffic-in-pain.pdf
    • http://www.gorillawalker.com/faith-hill-piece-of-my-heart.pdf
    • http://www.gorillawalker.com/fiber-optics.pdf
    • http://www.gorillawalker.com/escriba-y-sustente-su-t.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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