Malicious PDF — malware analysis report

Static analysis result for SHA-256 4af940dc56889979…

MALICIOUS

PDF

34.4 KB Created: 2021-06-18 03:04:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-06
MD5: ab8658a23c77f1f36e3d5acee34a6cad SHA-1: 8b96105a45bc4a7f4cca5d9229e8177c8a5de59d SHA-256: 4af940dc568899794d3efe8edb177374ce08330c34c934eaccf16e2435aa2dae
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/help-i-got-hacked-on-roblox-game-hack In PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-roblox-clothes-templates_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/how-to-get-free-robux-on-phone_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/free-robux-games-that-actually-work_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-robux-codes-2021-real_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/best-minecraft-hacked-client-2021_GM479516143.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/how-to-get-roebucks-in-roblox_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/coin-master-free-gifts_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/free-robux-generator-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/roblox-lovenet_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/free-spins-coin-master-2021-today_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/coin-master-hack-ios-no-human-verification_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/como-hackear-comandos-de-roblox_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/coin-master-pro-hack_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/codes-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-minecraft-for-kids_GM479516143.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/coin-master-hack-ios-12_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/coin-master-free-spin-ml_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/coin-master-offline-hack_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/apps-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/pubg-uc-ykleme_GM1330123889.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_off00003008.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3008 22204 bytes
SHA-256: cf5a9863bfa0ad74e4e8d891e08bc2ab9320aaad59470f4e893f5c7d7ed8543e
font_01_sfnt_off000060e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60E8 19108 bytes
SHA-256: c49c521f33dbfb45b3926510262ca4cd1c565dfc94c54e56b516bed34e9fafd1