Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e37201a37975653…

MALICIOUS

PDF

34.7 KB Created: 2021-07-03 15:09:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-19
MD5: d022dba292e112789f4ae6bab77b2ecb SHA-1: 7a8af80a5483d2c66f1c1d8997a2a2ae3b0771f7 SHA-256: 4e37201a37975653638f3ef23f9f9da2b03914359d504d5ee54adfcf3b45c932
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/431946152/free-exsotic-cdes-in-roblox-assain-game-hack In PDF document text
    • http://library.ft.upnvj.ac.id/repository/coin-master-hack-online-cheat_GM406889139.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/how-to-hack-roblox-speed-simulator-2_GM431946152.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/roblox-mad-city-money-cheat-codes_GM431946152.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/descragr-hack-roblox_GM431946152.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/free-robux-only-username-no-human-verification_GM431946152.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/hack-coin-master-mod-apk_GM406889139.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/coin-master-free-spins-today-new_GM406889139.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/roblox-hacking-website_GM431946152.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/coin-master-free-spins-hacktman_GM406889139.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/ultimate-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/how-to-get-free-robux-easy-2021-october_GM431946152.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/free-roblox-suit-shirt-templates_GM431946152.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/hack-phamtom-forces-roblox-2021_GM431946152.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/wurst-hacked-client-112-2_GM479516143.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/free-robux-no-gift-card_GM431946152.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/coin-master-free-spins-haktuts_GM406889139.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/arts-78-roblox-hack_GM431946152.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/free-robux-legally-no-offers_GM431946152.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/como-hackear-el-juego-coin-master_GM406889139.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/hack-money-server-roblox_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_off0000319b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x319B 22112 bytes
SHA-256: d5e5dedf1dadf3c7792b602f3adff7192eac8249bb077f77801b3c4c2c4934a9
font_01_sfnt_off000062ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62BA 19048 bytes
SHA-256: b57d4f557ac0dcfe50681d0f70f905f2cdacd56ae08ce8c01d9ceb4edc9d4531