Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2fb538900980356…

MALICIOUS

PDF

35.4 KB Created: 2021-06-29 04:51:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-13
MD5: e4e9804b7d23186a3cd052a2b2277cd3 SHA-1: 550b2bda6ec82832ddda92cceac6c867d5c2e79f SHA-256: f2fb53890098035605c3b478c4f9a31b6bb131a2183c0c0f0882ce6a69961a5f
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/431946152/free-robux-with-developer-tools-2021-game-hack In PDF document text
    • http://library.sdkmaterdei.sch.id/repository/roblox-tokyo-ghoul-online-cheat_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/free-roblox-myth-avatar_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/free-minecraft-alt-accounts_GM479516143.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/roblox-free-shirts-and-pants-girl_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/i-hacked-my-haters-roblox-account_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/oakley-roblox-free_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/coin-master-free-spin-ml_GM406889139.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/best-free-things-in-roblox-catalog-2021_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/coin-master-hacks_GM406889139.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/roblox-doungnquest-legandary-hack_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/how-to-hack-peoples-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/big-brother-hacks-roblox_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/how-to-hack-roblox-for-robux-2021_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/free-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/free-roblox-hack-no-survey-or-download_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/free-roblox-creator-packs_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/coin-master-free-coins-and-spins-app_GM406889139.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/roblox-the-legendary-swords-rpg-hack_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/skin-roblox-hack_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/roblox-lumber-tycoon-2-spawn-hack_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_off000030af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30AF 22080 bytes
SHA-256: 5b758826588ddd4a4b67dfb4cab427ae16416035fc8161cf6986dceb4eaaedbb
font_01_sfnt_off000061db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61DB 20236 bytes
SHA-256: 9fb6bce84e30d2c0a0b4d8abd8e604390c54486dab859dab39c81398ae4df69a