Malicious PDF — malware analysis report

Static analysis result for SHA-256 4bb626e8db5fd8f8…

MALICIOUS

PDF

42.2 KB Created: 2019-02-12 19:46:44 +03:00 Authoring application: Microsoft Word: AdobePS 8.7.3 (301) (via Acrobat Distiller 5.0.5 for Macintosh)
MD5: 2b51dc1862e37a88d37e0b1f3070822d SHA-1: d5ff5795627d248a769fbe789844a10ec50f0667 SHA-256: 4bb626e8db5fd8f8dbe4403832750fdc84555bb4a6342c4250eaa972474d2f98
92 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1059.001 PowerShell

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The presence of multiple embedded URLs, specifically pointing to other PDF files on the same domain, suggests a dropper or downloader functionality. The heuristic firings confirm the presence of external URIs within the PDF structure. No scripts were extracted from this sample, but the overall structure and detected heuristics point to a malicious PDF dropper.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8872

Heuristics 3

  • ClamAV: Pdf.Dropper.Agent-7143806-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7143806-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/successful-drawing.pdf
    • http://www.gorillawalker.com/spring-nature-projects-for-every-season.pdf
    • http://www.gorillawalker.com/bartolomeu-dias.pdf
    • http://www.gorillawalker.com/the-girls-of-the-garden-club-a-comedy-in-three.pdf
    • http://www.gorillawalker.com/it-s-complicated-maxi-s-place.pdf
    • http://www.gorillawalker.com/an-heiress-for-his-empire-ruthless-russians.pdf
    • http://www.gorillawalker.com/wittgenstein-the-crooked-roads-modern-plays.pdf
    • http://www.gorillawalker.com/horizons-5th-edition.pdf
    • http://www.gorillawalker.com/a-textbook-of-graph-theory-universitext.pdf
    • http://www.gorillawalker.com/blood-ravens-the-dawn-of-war-omnibus-warhammer-40-000.pdf
    • http://www.gorillawalker.com/welding-inspection-technology.pdf
    • http://www.gorillawalker.com/books-for-kids-fun-facts-and-amazing-photos-of-giant.pdf
    • http://www.gorillawalker.com/ray-of-sunlight.pdf
    • http://www.gorillawalker.com/communication-theory-and-signal-processing-for-transform-coding-kindle-edition.pdf
    • http://www.gorillawalker.com/american-liberty-and-natural-law.pdf
    • http://www.gorillawalker.com/dancing-for-the-lord-the-academy-kindle-edition.pdf
    • http://www.gorillawalker.com/disability-in-judaism-christianity-and-islam-sacred-texts-historical-traditions.pdf
    • http://www.gorillawalker.com/ecclesion-the-small-church-with-a-vision.pdf
    • http://www.gorillawalker.com/the-homesick-texan-s-family-table-lone-star-cooking-from.pdf
    • http://www.gorillawalker.com/a-history-of-philosophy-vol-1-of-3-classic-reprint.pdf
    • http://www.gorillawalker.com/national-innovation-systems-a-comparative-analysis.pdf
    • http://www.gorillawalker.com/politics-in-america-2014-elections-and-updates-edition-books-a.pdf
    • http://www.gorillawalker.com/red-raven-polka-international-dance-music-for-piano-solo.pdf
    • http://www.gorillawalker.com/global-issues-and-ethical-considerations-in-human-enhancement-technologies-advances.pdf
    • http://www.gorillawalker.com/a-bastion-of-empire-a-story-of-fort-st-joseph.pdf
    • http://www.gorillawalker.com/the-best-and-the-brightest-20th-anniversary-edition.pdf
    • http://www.gorillawalker.com/applied-infrared-photography-kodak-publication.pdf
    • http://www.gorillawalker.com/lun-xin-gan-jue-pai-zhonghua-bo-shi-wen-ku.pdf
    • http://www.gorillawalker.com/compilation-of-the-social-security-laws-1962.pdf
    • http://www.gorillawalker.com/lure-of-the-caribbean.pdf
    • http://www.gorillawalker.com/winter-season.pdf
    • http://www.gorillawalker.com/dinosaur-eyewitness.pdf
    • http://www.gorillawalker.com/wish-you-were-here-the-official-biography-of-douglas-adams.pdf
    • http://www.gorillawalker.com/starting-running-your-own-horse-business-2nd-edition-marketing-strategies.pdf
    • http://www.gorillawalker.com/viajes-a-las-islas-de-la-ame-129-rica-coleccio.pdf
    • http://www.gorillawalker.com/glorious-and-free.pdf
    • http://www.gorillawalker.com/hundred-questions-general-law-adoption-law-marriage-law-of-succession.pdf
    • http://www.gorillawalker.com/stockholm-sweden-1-10-000-street-map-international-travel-maps.pdf
    • http://www.gorillawalker.com/in-god-we-don-t-trust.pdf
    • http://www.gorillawalker.com/globalizing-feminist-bioethics-crosscultural-perspectives-paperback.pdf
    • http://www.gorillawalker.com/welding-inspection-tech
    • 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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