Malicious PDF — malware analysis report

Static analysis result for SHA-256 72b690759a2fcf65…

MALICIOUS

PDF

34.5 KB Created: 2021-07-06 01:28:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-28
MD5: 7cdbcd8715181b9c922bfe6c36d0dfec SHA-1: 3f2dd2f46804c4ecd0337dfb6517bcd49b2c9a7f SHA-256: 72b690759a2fcf650024c8dcd7041dd535bea25f8a2b96c71d7d237a2e626404
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-free-coins-and-spins-link-today-game-hack In PDF document text
    • https://fib.ub.ac.id/sac/repository/how-to-get-any-hat-for-free-on-roblox_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/free-robux-meme_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/coin-master-free-bonus_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/free-robux-no-verification-required_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/how-to-hack-jailbreak-roblox-noclip_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/tiktok-free-like-and-views_GM835599320.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/hacker-en-roblox_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/roblub-for-free-on-roblox-100-working-2021_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/riot-police-roblox-free_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/how-do-you-hack-roblox-games_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/omo-recuperar-una-uenga-hacker-en-roblox_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/how-to-get-robux-fast_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/roblox-tycoon-cash-free_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/hacking-apps-for-roblox_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/earn-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/7-year-old-roblox_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/coin-master-hack-without-verification-or-downloading-apps_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/how-to-hack-someones-roblox-account-with-cheat-engine_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/how-to-hack-peoples-accounts-in-roblox_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/roblox-hack-commands-and-lua-c_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_off00002f0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F0E 22972 bytes
SHA-256: 4fa52c43868d4e6839e481cec0b12fdc84f3524b010e9d71d6007076c616da6c
font_01_sfnt_off000062d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62D9 18696 bytes
SHA-256: 31669538ff40287ff7f58bdcd26457d43685aec4be0ef4186bcc350705393131

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