Malicious PDF — malware analysis report

Static analysis result for SHA-256 78288093ac385b63…

MALICIOUS

PDF

33.6 KB Created: 2021-07-06 12:03:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-16
MD5: d0bb920410d5ed9625217b2ccdd80db8 SHA-1: 3c82322f25d5ff07115f6ae84bfeb523f1835f2e SHA-256: 78288093ac385b635b2deaf4e1adb1304b5e7f232f127d617e28cdd370d21a50
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/rbx-roblox-game-hack In PDF document text
    • http://perpus.masda.ac.id/repository/coinmasterdailyfreespins-com_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/free-robux-gift-card-codes_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/free-robux-master_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/lazyblox-com-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/20-roblox-card-free_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/free-spins-coin-master-app-ios_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/coin-master-hack-2021-apk_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/hacks-roblox-cambiar-nombre_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/hack-free-spin-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/free-spin-links-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/how-to-fix-elysian-roblox-hack-crash_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/coin-master-free-spin-daily-link_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/how-to-get-free-money-on-roblox-cheat_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/real-robux_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/roblox-sued_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/cheat-roblox-jailbreak-money-give_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/coin-master-free-spins-only_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/how-to-get-free-robux-roblox-hack_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/roblox-dungeon-quest-get-unlimited-gold-and-free-vip_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/free-robux-no-human-verification-generator_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_off00002d7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D7D 22484 bytes
SHA-256: 01cf573f46920dd777ea6f18b8cafa35d0a95128e76361df5fa31fbf2174eb8f
font_01_sfnt_off00005fb9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FB9 18484 bytes
SHA-256: f26455743a047e8df56ca1524d10cc4c18a922f3a9254ca202c5887b6dcb4309