Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e3ce3dbacd38479…

MALICIOUS

PDF

35.3 KB Created: 2021-06-25 09:17:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-19
MD5: 5082ecf204673112fe74ba1d95364da2 SHA-1: dc57bfc4e1af3ed9fc0ed8a10d06bf8b3db5fa28 SHA-256: 4e3ce3dbacd38479e830a7d5fefd6f0e798f2f34fa415f8854a4ea562a1fd5a6
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/instant-robux-hack-2021-game-hack In PDF document text
    • http://opac.kolejkrim.edu.my/repository/coin-master-free-coins-and-spins_GM406889139.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/free-roblox-hair-for-avatar_GM431946152.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/free-spins-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/free-robux-you-dont-have-to-do-anything_GM431946152.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/oprewards-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/roblox-character-girl-free_GM431946152.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/robloxmatchcom-free-robux_GM431946152.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/coin-master-cheats-free_GM406889139.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/how-many-levels-in-coin-master_GM406889139.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/free-roblox-item-2021_GM431946152.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/free-robux-no-scam_GM431946152.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/roblox-free-robux-enter-password_GM431946152.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/coin-master-free-spins-link-today-hack_GM406889139.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/minecraft-free-download-laptop_GM479516143.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/earn-free-robux-today_GM431946152.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/roblox-skin-creator-free_GM431946152.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/how-to-hack-roblox-for-robux_GM431946152.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/master-coin-free-link_GM406889139.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/roblox-robux-hack_GM431946152.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/roblox-studio-free-robux_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_off0000336d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x336D 22096 bytes
SHA-256: 10fcef9b0f2e83b0c73f50aed8d1468662fc9afbd0b58a67ffb963229ce8b997
font_01_sfnt_off00006445.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6445 19228 bytes
SHA-256: 84543316ebd681495bf8727b3d21e04078319cdbc61316e600bf5da7a6dac21a