Malicious PDF — malware analysis report

Static analysis result for SHA-256 f955e76024d4b770…

MALICIOUS

PDF

44.6 KB Created: 2018-11-30 20:55:40 +03:00 Authoring application: PScript5.dll Version 5.2 (via ePapyrus PSI 8.51)
MD5: 9fc7cf2aeb21dedbeca6e02775690a26 SHA-1: c8037efbb8eabfc4e63b4dd46f2a7583c712840e SHA-256: f955e76024d4b7705795cdef2429e4aaff60b2b865dc306a12db551d4fcc0662
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment

The PDF contains a large number of embedded links to external PDF files, primarily hosted on www.gorillawalker.com. This behavior is indicative of a link farm or a SEO poisoning attack, aiming to drive traffic to a specific set of resources. No scripts were extracted, and the document body was unreadable, limiting further analysis of the immediate payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9007

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/mute-magazine-vol-2-12.pdf
    • http://www.gorillawalker.com/the-oxford-chronology-of-english-literature-two-volume-set.pdf
    • http://www.gorillawalker.com/advances-in-the-study-of-behavior-volume-22.pdf
    • http://www.gorillawalker.com/mitch-epstein-american-power.pdf
    • http://www.gorillawalker.com/fifth-grade-common-core-workbook-worksheets.pdf
    • http://www.gorillawalker.com/organic-chemistry-i-for-dummies.pdf
    • http://www.gorillawalker.com/solid-state-radiation-detectors-technology-and-applications-devices-circuits-and.pdf
    • http://www.gorillawalker.com/algebra-2-an-incremental-development-2nd-edition.pdf
    • http://www.gorillawalker.com/badminton-magazine-2013-december.pdf
    • http://www.gorillawalker.com/the-expanding-role-of-mass-spectrometry-in-biotechnology-second-edition.pdf
    • http://www.gorillawalker.com/hornpiper-s-dance-french-horn-solo-and-eb-horn-with.pdf
    • http://www.gorillawalker.com/erectile-dysfunction-cv-disease-are-often-paired-predicts-peripheral-vascular.pdf
    • http://www.gorillawalker.com/the-best-of-microwave-cooking.pdf
    • http://www.gorillawalker.com/the-princess-bride-s-morgenstern-s-classic-tale-of-true.pdf
    • http://www.gorillawalker.com/langford-s-advanced-photography-the-guide-for-aspiring-photographers-the.pdf
    • http://www.gorillawalker.com/remote-sensing-and-geographic-information-system.pdf
    • http://www.gorillawalker.com/debugging-at-the-electronic-system-level.pdf
    • http://www.gorillawalker.com/uncle-sam-s-locomotives-the-usra-and-the-nation-s.pdf
    • http://www.gorillawalker.com/pena-nieto-el-gran-montaje-actualidad-spanish-edition.pdf
    • http://www.gorillawalker.com/venice-of-today-and-yesterday.pdf
    • http://www.gorillawalker.com/doodle-farm-oodles-of-mooing-oinking-and-quacking-doodles-to.pdf
    • http://www.gorillawalker.com/melodic-etudes-for-beginning-clarinet.pdf
    • http://www.gorillawalker.com/alfred-just-for-fun-classic-rock-banjo-book.pdf
    • http://www.gorillawalker.com/calligraphy-essentials-easy-techniques-for-lettering-and-decoration.pdf
    • http://www.gorillawalker.com/of-kings-and-desperate-men-a-novel.pdf
    • http://www.gorillawalker.com/krishnamurti-100-years.pdf
    • http://www.gorillawalker.com/architectural-composition.pdf
    • http://www.gorillawalker.com/electronic-beam-steering-and-polarization-agile-planar-antennas-in-liquid.pdf
    • http://www.gorillawalker.com/mambos-sambas-rhumbas-paperback-songs.pdf
    • http://www.gorillawalker.com/mapart-canada-back-roads-atlas.pdf
    • http://www.gorillawalker.com/beyond-kaieteur.pdf
    • http://www.gorillawalker.com/her-husband-s-gym-interracial-black-mmm-white-f-husband.pdf
    • http://www.gorillawalker.com/listening-to-nineteenth-century-america.pdf
    • http://www.gorillawalker.com/southern-horrors-women-and-the-politics-of-rape-and-lynching.pdf
    • http://www.gorillawalker.com/evaluation-for-guardianship-best-practices-for-forensic-mental-health-assessments.pdf
    • http://www.gorillawalker.com/look-out-for-strangers-red-rainbows-safety.pdf
    • http://www.gorillawalker.com/black-masculinity-and-the-frontier-myth-in-american-literature-literature.pdf
    • http://www.gorillawalker.com/crocheted-elephant-vintage-stuffed-animal-toy-crochet-pattern-from-the.pdf
    • http://www.gorillawalker.com/extreme-bars-english-dutch-and-french-edition.pdf
    • http://www.gorillawalker.com/direct-democracy-or-representative-government-dispelling-the-populist-myth.pdf
    • http://www.gorillawalker.com/algebra-2-an-incremental-
    • 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/