Malicious PDF — malware analysis report

Static analysis result for SHA-256 478cd9507ca8e382…

MALICIOUS

PDF

35.2 KB Created: 2021-06-26 02:17:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-20
MD5: d12f7182505399ca3933bcec9410248a SHA-1: af0919200616ba5d628e206a065efef3f2d234b6 SHA-256: 478cd9507ca8e3825bd4ad38789497ebb94782e96dae15ef3ac24c573e703d1a
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-roblox-t-shirt-templates-game-hack In PDF document text
    • http://library.fk.upnvj.ac.id/repository/robloxheroxyz-free-robux_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/roblox-mods-free-download_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/lumber-tycoon-2-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/how-to-get-free-adminon-roblox-for-any-game_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/roblox-jailbroken-hack_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/coin-master-hack-2021-no-survey_GM406889139.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/how-to-get-free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/free-tiktok-coins_GM835599320.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/coin-master-pc-game-free-download_GM406889139.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/free-face-roblox_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/how-do-i-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/logiciel-de-hack-roblox_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/xray-mod-minecraft-114_GM479516143.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/coin-master-free-coin-hack_GM406889139.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/hacks-for-roblox-assassin-auto-aiming_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/is-minecraft-java-edition-free_GM479516143.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/free-robux-roblox-promo-codes_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/dress-roblox-free_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/classic-minecraft-net-hacks_GM479516143.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_off00003277.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3277 22264 bytes
SHA-256: 617b9ba0a72474c5cfa59ecc3c9067a21e71c160cc088a850034bd10010b2a0e
font_01_sfnt_off000063a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63A7 19476 bytes
SHA-256: 101cf6fe91b141d9411aa0236265fc09e2526c38a4c4d771cb3bd8d13cc1b1fe