Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2f518587ccb8712…

MALICIOUS

PDF

34.4 KB Created: 2021-06-24 07:51:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-13
MD5: a5ad8e01ac3ab9b9c943f74b368bfc17 SHA-1: 7df997f63fca73e999ccaaa4521cf62340e0b3d7 SHA-256: f2f518587ccb87124949b8e58e8c1ed0850e53b9d2061c8e4cef5f75c979bf46
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.co/app/406889139/can-lucky-patcher-hack-coin-master-game-hack In PDF document text
    • https://www.bhyllsacreprimaryschool.org/admin/ckfinder/userfiles/files/easy-robux-hack_GM431946152.pdfIn PDF document text
    • https://www.bhyllsacreprimaryschool.org/admin/ckfinder/userfiles/files/how-to-get-minecraft-for-free-on-chromebook_GM479516143.pdfIn PDF document text
    • https://www.bhyllsacreprimaryschool.org/admin/ckfinder/userfiles/files/coin-master-free-spins-bit-ly_GM406889139.pdfIn PDF document text
    • https://www.bhyllsacreprimaryschool.org/admin/ckfinder/userfiles/files/jailbreak-roblox-hack_GM431946152.pdfIn PDF document text
    • https://www.bhyllsacreprimaryschool.org/admin/ckfinder/userfiles/files/coin-master-hack-spins-and-coins-unlimited-free_GM406889139.pdfIn PDF document text
    • https://www.bhyllsacreprimaryschool.org/admin/ckfinder/userfiles/files/coin-master-hack-apk-download-2021_GM406889139.pdfIn PDF document text
    • https://www.bhyllsacreprimaryschool.org/admin/ckfinder/userfiles/files/free-roblox-hack-us_GM431946152.pdfIn PDF document text
    • https://www.bhyllsacreprimaryschool.org/admin/ckfinder/userfiles/files/coin-spin_GM406889139.pdfIn PDF document text
    • https://www.bhyllsacreprimaryschool.org/admin/ckfinder/userfiles/files/get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://www.bhyllsacreprimaryschool.org/admin/ckfinder/userfiles/files/https-oprewards-com-roblox_GM431946152.pdfIn PDF document text
    • https://www.bhyllsacreprimaryschool.org/admin/ckfinder/userfiles/files/roblox-hack-ios_GM431946152.pdfIn PDF document text
    • https://www.bhyllsacreprimaryschool.org/admin/ckfinder/userfiles/files/how-to-get-free-robux-as-a-kid_GM431946152.pdfIn PDF document text
    • https://www.bhyllsacreprimaryschool.org/admin/ckfinder/userfiles/files/coin-master-hack-pc-free_GM406889139.pdfIn PDF document text
    • https://www.bhyllsacreprimaryschool.org/admin/ckfinder/userfiles/files/minecraft-windows-10-free-code_GM479516143.pdfIn PDF document text
    • https://www.bhyllsacreprimaryschool.org/admin/ckfinder/userfiles/files/how-to-actually-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.bhyllsacreprimaryschool.org/admin/ckfinder/userfiles/files/spin-link-coin-master_GM406889139.pdfIn PDF document text
    • https://www.bhyllsacreprimaryschool.org/admin/ckfinder/userfiles/files/free-robux-no-human-verify_GM431946152.pdfIn PDF document text
    • https://www.bhyllsacreprimaryschool.org/admin/ckfinder/userfiles/files/free-roblox-toys_GM431946152.pdfIn PDF document text
    • https://www.bhyllsacreprimaryschool.org/admin/ckfinder/userfiles/files/roblox-skins-boy-free_GM431946152.pdfIn PDF document text
    • https://www.bhyllsacreprimaryschool.org/admin/ckfinder/userfiles/files/play-minecraft-free-online-no-download_GM479516143.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_off00002f87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F87 22900 bytes
SHA-256: 5f32869f7e4084cabdd1946ab16158ad12f405e86ca705154255a7a7119131d5
font_01_sfnt_off000062d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62D1 18644 bytes
SHA-256: 4aa2ecd7f30d135146cb0da63d14d78e4416c57184309ecfebfb2756f4fd5faa

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