Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e3c18f004a8801a…

MALICIOUS

PDF

35.3 KB Created: 2021-07-06 09:33:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-19
MD5: 40163a206856506d010e31df13aa076d SHA-1: 9c507fbcec5b8d0bddbe6b69fcf42421fad9e658 SHA-256: 4e3c18f004a8801a49fa733879cd89889aa3e36ac1247b854972954d26aa6021
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-hack-apk-with-fb-login-game-hack In PDF document text
    • https://opac.heritagejkt.org/repository/sbh-hack-roblox_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/earn-free-robux_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/how-do-you-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org//repository/coin-master-free-cards-link-2021-today_GM406889139.pdfIn PDF document text
    • https://opac.heritagejkt.org//repository/coin-master-free-link-spin_GM406889139.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/skidmax-roblox-hack_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/free-vip-admin-commands-with-all-permissions-for-roblox_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org//repository/hack-coin-master-game-apk-download_GM406889139.pdfIn PDF document text
    • https://opac.heritagejkt.org//repository/coin-master-free-spin-whatsapp-group-link_GM406889139.pdfIn PDF document text
    • https://opac.heritagejkt.org//repository/minecraft-dungeons-free_GM479516143.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/free-roblox-hair-codes_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/pokemon-brick-bronze-roblox-hack-phone_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/how-to-make-t-shirts-for-free-on-roblox_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/wwwcoin-master-hack-apk_GM406889139.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/coin-master-hack-tool-v1-9-download-free_GM406889139.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/roblox-re_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/coin-master-card-hack-app_GM406889139.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/fre-robux-now_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/rblx-city-free-robux_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/free-robux-no-hack-no-survey_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_off00003306.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3306 22632 bytes
SHA-256: 4e4ab9c8a2a0559c5f415bfa1c8c1e90f7556eddd71ef69e3e5dfdf772607107
font_01_sfnt_off0000657a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x657A 18868 bytes
SHA-256: 64625659131879135842d7eca704acc58928c97793d04a50d93f3f4b5b29fb0a

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