Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b65b2ad636a4a77…

MALICIOUS

PDF

34.5 KB Created: 2021-06-30 11:20:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-17
MD5: 5997c1777e1e660eee6637a49ebaee48 SHA-1: 2850abc42198b2948c0aba8563a33e3e21fb9561 SHA-256: 2b65b2ad636a4a77bcff49364fce3e323db26010861a3cac41bbc80f9dffc55c
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/roblox-cheat-engine-health-hack-csgo-game-hack In PDF document text
    • http://pustaka.fhuk.unand.ac.id/repository/minecraft-hacker-skin_GM479516143.pdfIn PDF document text
    • http://pustaka.fhuk.unand.ac.id/repository/roblox-admin-hack-seth_GM431946152.pdfIn PDF document text
    • http://pustaka.fhuk.unand.ac.id/repository/free-robux-android-no-survey_GM431946152.pdfIn PDF document text
    • http://pustaka.fhuk.unand.ac.id/repository/roblox-walk-through-walls-hack_GM431946152.pdfIn PDF document text
    • http://pustaka.fhuk.unand.ac.id/repository/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • http://pustaka.fhuk.unand.ac.id/repository/synapse-x-free-download-roblox-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.fhuk.unand.ac.id/repository/free-robux-generator-for-10-year-olds_GM431946152.pdfIn PDF document text
    • http://pustaka.fhuk.unand.ac.id/repository/roblox-free-gamepasse-script-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.fhuk.unand.ac.id/repository/roblox-hack-script-give-weapons_GM431946152.pdfIn PDF document text
    • http://pustaka.fhuk.unand.ac.id/repository/how-to-get-20210-robux-free_GM431946152.pdfIn PDF document text
    • http://pustaka.fhuk.unand.ac.id/repository/robuxian-youtube-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.fhuk.unand.ac.id/repository/change-your-username-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://pustaka.fhuk.unand.ac.id/repository/what-items-are-free-in-roblox-catalog_GM431946152.pdfIn PDF document text
    • http://pustaka.fhuk.unand.ac.id/repository/super-nice-mml-hack-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.fhuk.unand.ac.id/repository/roblox-dragon-ball-online-hack_GM431946152.pdfIn PDF document text
    • http://pustaka.fhuk.unand.ac.id/repository/roblox-robux-hacks-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.fhuk.unand.ac.id/repository/how-to-install-cheat-engine-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.fhuk.unand.ac.id/repository/wwwrobux-cheat-us-unlimited_GM431946152.pdfIn PDF document text
    • http://pustaka.fhuk.unand.ac.id/repository/free-roblox-exploit-injector_GM431946152.pdfIn PDF document text
    • http://pustaka.fhuk.unand.ac.id/repository/blox-pink-robux-free_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_off000032a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32A2 21588 bytes
SHA-256: 071b2f9397288483d412bd9e545409c6c6647422e6a0e71b28778c6dbb95e50b
font_01_sfnt_off000061eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61EB 19044 bytes
SHA-256: 081563fcf3f6c641784051e21d1d857f37de7200dea63efaf0aa84fa2715b5a0