Malicious PDF — malware analysis report

Static analysis result for SHA-256 af2d531d6c7cf371…

MALICIOUS

PDF

35.2 KB Created: 2021-06-30 06:52:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-21
MD5: ecb3c72bee4c2df36108c03d0c17be35 SHA-1: 846098dfacd6ca4b342b82a12e71ce70efe9bfc7 SHA-256: af2d531d6c7cf3717dc31a0f24cbd0d9a5a527261fa8dfd8162950dc3cdd6ea1
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-admin-commands-roblox-exploit-game-hack In PDF document text
    • https://elibrary.sttar.ac.id/repository/coin-master-hack-to-get-free-spins_GM406889139.pdfIn PDF document text
    • https://elibrary.sttar.ac.id/repository/roblox-hacker-png_GM431946152.pdfIn PDF document text
    • https://elibrary.sttar.ac.id/repository/roblox-cheat-engine-hacks-admin-script_GM431946152.pdfIn PDF document text
    • https://elibrary.sttar.ac.id/repository/add-robux_GM431946152.pdfIn PDF document text
    • https://elibrary.sttar.ac.id/repository/robux-hack-free-robux_GM431946152.pdfIn PDF document text
    • https://elibrary.sttar.ac.id/repository/roblox-games-to-play-for-free_GM431946152.pdfIn PDF document text
    • https://elibrary.sttar.ac.id/repository/how-do-you-hack-roblox_GM431946152.pdfIn PDF document text
    • https://elibrary.sttar.ac.id/repository/how-to-hack-on-roblox-for-all-games_GM431946152.pdfIn PDF document text
    • https://elibrary.sttar.ac.id/repository/download-hack-coin-master-apk_GM406889139.pdfIn PDF document text
    • https://elibrary.sttar.ac.id/repository/how-to-win-free-robux_GM431946152.pdfIn PDF document text
    • https://elibrary.sttar.ac.id/repository/how-to-hack-someones-roblox-account_GM431946152.pdfIn PDF document text
    • https://elibrary.sttar.ac.id/repository/coin-master-fun-hack-online_GM406889139.pdfIn PDF document text
    • https://elibrary.sttar.ac.id/repository/how-to-get-free-robux-easy-and-no-ganerators_GM431946152.pdfIn PDF document text
    • https://elibrary.sttar.ac.id/repository/how-to-get-stuff-that-cost-coins-free-mpe-master_GM406889139.pdfIn PDF document text
    • https://elibrary.sttar.ac.id/repository/free-spin-coin-master-today_GM406889139.pdfIn PDF document text
    • https://elibrary.sttar.ac.id/repository/free-roblox-gift-card-youtube_GM431946152.pdfIn PDF document text
    • https://elibrary.sttar.ac.id/repository/free-roblox-card-code-generator-2021-no-survey_GM431946152.pdfIn PDF document text
    • https://elibrary.sttar.ac.id/repository/how-to-hack-someones-roblox-account-2021_GM431946152.pdfIn PDF document text
    • https://elibrary.sttar.ac.id/repository/hacking-egg-roblox_GM431946152.pdfIn PDF document text
    • https://elibrary.sttar.ac.id/repository/how-to-get-free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • https://www.roblox.com/my/tasksIn 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_off00003277.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3277 22032 bytes
SHA-256: e22e333a7f759c0c61a5546eace1460a975e29e8760166f4df94431300acf5a5
font_01_sfnt_off0000633a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x633A 19484 bytes
SHA-256: 0dc05d37d5deaff6a1e4a5539a1fbeef378dd6a4018110afed62d6ce5f3790ae

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