Malicious PDF — malware analysis report

Static analysis result for SHA-256 4afc26cbc0449019…

MALICIOUS

PDF

34.4 KB Created: 2021-07-05 23:14:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-06
MD5: cf965591f86efc1d4f56e2a4be3b2a3e SHA-1: 60de09fdbef9c9dec86c2c9a645d9b4fb9eb8e9f SHA-256: 4afc26cbc0449019642897edc955f369650691a824c60fbe6b91521b3649942b
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-vip-roblox-game-hack In PDF document text
    • http://lib-smansumsel.sch.id/repository/coin-master-cheat-free_GM406889139.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/roblox-infinite-robux-cheat_GM431946152.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/coin-master-free-card-link-today_GM406889139.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/youtube-roblox-how-to-get-a-volt-blike-for-free_GM431946152.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/how-to-get-free-robux-obby-no-password_GM431946152.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/tower-of-hell-roblox-hack_GM431946152.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/earn-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/cheater-sur-roblox-nul_GM431946152.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/coin-master-rewards-2021_GM406889139.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/free-executor-roblox_GM431946152.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/free-robux-only-username-no-human-verification_GM431946152.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/roblox-hack_GM431946152.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/how-to-get-free-hats-on-roblox_GM431946152.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/pubg-uc-no-verification_GM1330123889.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/minecraft-survival-free_GM479516143.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/watch-videos-for-robux_GM431946152.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/play-minecraft-online-free_GM479516143.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/free-spins-on-coin-master-game_GM406889139.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/free-robux-now_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_off00002df0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DF0 22924 bytes
SHA-256: 53b90eea0efa5d11af2df674867c81d46456ccecad1e36c4be37a44b307e41e2
font_01_sfnt_off0000613c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x613C 19080 bytes
SHA-256: 5cd26e17e9044f55fd2016feb0b7717245efb1602296708d61af1d0891fbbad2