Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2fdffbbd170bf42…

MALICIOUS

PDF

36.9 KB Created: 2021-07-06 02:20:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-13
MD5: 5e42f4e943171702c430f44e7b9a795f SHA-1: 6d8a9b21d77b023056132f1c810aee1bdb07ec34 SHA-256: f2fdffbbd170bf42a1e369008cf90fd5b2e2f8cc5f346bec5acd14ebe0066ff0
160 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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.tw/app/406889139/coin-master-mod-version-free-download-game-hack In PDF document text
    • https://fib.ub.ac.id/sac/repository/new-this-game-actuslly-gives-free-robux_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/how-to-get-money-in-roblox-high-school-cheat-engine_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/roblox-www-com_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/how-to-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/coin-master-free-spins-link-2021-ios_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/roblox-download-pc-free_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/free-daily-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/como-hackear-el-pin-de-una-cuenta-de-roblox_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/spin-links-for-coin-master_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/roblox-wizard-life-hack-site-v3rmillionnet_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/coin-master_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/roblox-noot-noot-hack-song-roblox-id_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/pokemon-go-free-play_GM1094591345.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/how-to-get-free-robux-inspect-stop_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/hacked-roblox-account-username-and-password-with-karambit-in-cbro_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/online-coin-master-free-spin-app_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/good-roblox-hacks-that-can-effect-other-players_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/how-to-get-free-roblox-items_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/download-roblox-music-for-free_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_off000038be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x38BE 22980 bytes
SHA-256: fc5ff6e27e84c93569ff3ad40d2b39431d133ed6a57c1f27ec9a3ce66535c665
font_01_sfnt_off00006c51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C51 18712 bytes
SHA-256: 71a09ee6f880fbc89129f73592ba447c972cee7fa24c7fdfce562b85b17c7c45

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