Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e3448a4ddb0299d…

MALICIOUS

PDF

34.0 KB Created: 2021-06-19 04:08:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: d8f2fb8d49ff7345448c0660034ba5f3 SHA-1: 1a55f2f2acd4a7f3c05081e1a398f69c8c8045b9 SHA-256: 4e3448a4ddb0299dc77a68399214915f81d9fa2176e3c0f1bddea4e27ef5cf22
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://netcdn.co/app/431946152/site-hack-robux-game-hack PDF link annotation
    • http://lib.smklabor.sch.id/repository/get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/roblox-images_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/minecraft-pe-hacks_GM479516143.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/earn-robux-today_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/rbx-roblox-robux_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-roblox-shirt-templates_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-robux-groups-2021_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/can-you-play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/bux-life-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/roblox-one-piece-final-chapter-hack_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/coin-master-free-coins_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/coin-master-hack-lost-world-2021-com_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/client-minecraft_GM479516143.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/roblox-shirt-girl-free_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-printable-roblox-images_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/hackaron-roblox-robux-hack_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/minecraft-hack-client-download_GM479516143.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/coin-master-free-spins-coins_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002edd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EDD 22180 bytes
SHA-256: 5eb33ab4ba35423598546a5cf5a1b65db3b344b973282a44ea4f88e3a28bb1c3
font_01_sfnt_off00006027.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6027 18948 bytes
SHA-256: 326541ef620ecc177251928631a6874637fa76283667c1698f9992e5837b6b27

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