Malicious PDF — malware analysis report

Static analysis result for SHA-256 0582981a8b4cfe5e…

MALICIOUS

PDF

47.1 KB Created: 2019-04-11 22:31:03 +03:00 Authoring application: LaTeX with hyperref and pdfscreen (via Mac OS X 10.5.7 Quartz PDFContext)
MD5: 2936efc378b15c288764440ae089155c SHA-1: c5941f47120a972f15e06a53e61db718e6eec3ce SHA-256: 0582981a8b4cfe5e925d8a2200a2e9d54a4a4f2da2ea63b4b762325fcd28d6d7
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links pointing to external PDF files, a technique often used for SEO manipulation or to distribute further malicious content. The ML classifier also flagged this PDF as malicious. No scripts were extracted from this sample, and the document body was heavily obfuscated.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8308

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/basic-fire-hydraulics-workbook.pdf
    • http://www.gorillawalker.com/sweet-surrender-book-one-two-special-edition.pdf
    • http://www.gorillawalker.com/mauritius-west-a-souvenir-collection-of-colour-photographs-with-captions.pdf
    • http://www.gorillawalker.com/fetal-and-pediatric-ultrasound-a-casebook-approach.pdf
    • http://www.gorillawalker.com/saab-9-3-service-and-repair-manual.pdf
    • http://www.gorillawalker.com/language-fundamentals-grade-2.pdf
    • http://www.gorillawalker.com/sturmgeschutz-iii-backbone-of-the-german-infantry-volume-i-history.pdf
    • http://www.gorillawalker.com/fleeing-the-house-of-horrors-women-who-have-left-abusive.pdf
    • http://www.gorillawalker.com/crockpot-recipes-paleo-slow-cooker-cookbook-50-unique-delicious-paleo.pdf
    • http://www.gorillawalker.com/mel-bay-j-s-bach-cello-suite-1-lorimer.pdf
    • http://www.gorillawalker.com/world-atlas-of-military-history-to-1500-v-1.pdf
    • http://www.gorillawalker.com/on-puns-the-foundation-of-letters.pdf
    • http://www.gorillawalker.com/building-code-requirements-and-specification-for-masonry-structures-and-commentaries.pdf
    • http://www.gorillawalker.com/the-taming-of-man-a-submissive-millionaire-macho-werewolf-polynesian.pdf
    • http://www.gorillawalker.com/the-day-mohan-found-his-confidence.pdf
    • http://www.gorillawalker.com/beyond-the-er-doors-an-insiders-view-of-medical-malpractice.pdf
    • http://www.gorillawalker.com/2013-ashrae-handbook-fundamentals-ip-ashrae-handbook-fundamentals-inch-pound.pdf
    • http://www.gorillawalker.com/new-orleans-a-t-w-een-travelogue.pdf
    • http://www.gorillawalker.com/goldilocks-and-the-three-bears-special-edition-7-different-versions.pdf
    • http://www.gorillawalker.com/birdie-s-big-girl-shoes-birdie-series.pdf
    • http://www.gorillawalker.com/visualisation-oxford-centre-for-the-mind.pdf
    • http://www.gorillawalker.com/mauritius-2014-calendar.pdf
    • http://www.gorillawalker.com/concrete-at-home-innovative-forms-and-finishes.pdf
    • http://www.gorillawalker.com/water-from-a-deep-well-christian-spirituality-from-early-martyrs.pdf
    • http://www.gorillawalker.com/moments-a-small-poetry-collection-by-ursula-k-raphael.pdf
    • http://www.gorillawalker.com/882-1-2-amazing-answers-to-your-questions-about-the.pdf
    • http://www.gorillawalker.com/hopi-the-cliff-dweller.pdf
    • http://www.gorillawalker.com/steck-vaughn-achieve-california-student-package-mathematics-2004-achieve-it.pdf
    • http://www.gorillawalker.com/from-cuba-with-a-song-sun-moon-classics.pdf
    • http://www.gorillawalker.com/tolstoy-s-letters-volume-1-1828-1879-leo-tolstoy-diaries.pdf
    • http://www.gorillawalker.com/cheering-for-the-children-creating-pathways-to-hope-for-children.pdf
    • http://www.gorillawalker.com/maraging-steels-modelling-of-microstructure-properties-and-applications-woodhead-publishing.pdf
    • http://www.gorillawalker.com/dropping-gloves-portland-storm-volume-10.pdf
    • http://www.gorillawalker.com/rigel-kentaurus-deep-space-book-1-kindle-edition.pdf
    • http://www.gorillawalker.com/atlas-geografico-documental-ecoturistico-del-peru.pdf
    • http://www.gorillawalker.com/capillary-electrophoresis-in-biotechnology-and-environmental-analysis-progress-in-hplc.pdf
    • http://www.gorillawalker.com/origin-east-africa-african-writers-series.pdf
    • http://www.gorillawalker.com/holly-springs-van-dorn-the-css-arkansas-and-the-raid.pdf
    • http://www.gorillawalker.com/ars-sacra-800-1200-second-edition-the-yale-university-press.pdf
    • http://www.gorillawalker.com/hypervigilance-in-patients-with-borderline-personality-disorder-specificity-automaticity-and.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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