Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6e58db91f2c910d…

MALICIOUS

PDF

33.7 KB Created: 2021-07-01 16:25:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: d5b929fd78bae6fba421e67ee2cdf6ca SHA-1: 203676ef37411d7eb39f27d214894019705e6b68 SHA-256: f6e58db91f2c910de0c1015dc7502a5f6a1e992186bcb26f259b246b32e72c30
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/roblox-fantastic-frontier-hack-game-hack PDF link annotation
    • http://lib.kunci.or.id/repository/www-coin-master-hack-xyz_GM406889139.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/free-robux-com-real_GM431946152.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/bhop-hacks-roblox-2021_GM431946152.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/old-roblox-accounts-for-free_GM431946152.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/app-for-hacking-roblox_GM431946152.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/download-rc7-roblox-hack_GM431946152.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/coin-master-golden-cards-hack_GM406889139.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/official-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/wwwcoin-master-free-spincom_GM406889139.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/robux-free-online_GM431946152.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/games-for-robux_GM431946152.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/how-to-hack-a-old-roblox-account_GM431946152.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/how-to-make-free-shirts-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/robloxfun-com-generator_GM431946152.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/crack-x-roblox-hack_GM431946152.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/ifninite-jump-roblox-hack_GM431946152.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/unpatchable-new-noclip-not-cheat-engine-jailbreak-roblox-2021_GM431946152.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/roblox-hack-to-go-through-walls_GM431946152.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_off00002ea4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EA4 21756 bytes
SHA-256: 3d0affd1475374aac17bbbbd52f37dd3707c830a41216c84b6573944c11df6f0
font_01_sfnt_off00005e8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E8C 19044 bytes
SHA-256: 38b17adb70ece0843e293149db77ef2efca410e14f3cf438c81f38969e63f104

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