Malicious PDF — malware analysis report

Static analysis result for SHA-256 af2549690016af74…

MALICIOUS

PDF

44.8 KB Created: 2021-06-03 08:52:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-21
MD5: 54b4f941497e319e3a01df3b4a8bb352 SHA-1: f19e936264667f5fe2d9fbc57adfb96162e1e630 SHA-256: af2549690016af74669f1e40bd7bf455f8eafe16b475e974bde4b1dff9f9f4d3
160 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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 https://netcdn.online/app/835599320/tiktok-free-hashtags-game-hack In PDF document text
    • http://lib-smansumsel.sch.id/repository/get-robux_GM431946152.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/coin-master-free-link-today_GM406889139.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/claim-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/jailbreak-roblox-hack_GM431946152.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/roblox-bux-free_GM431946152.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/pokemon-go-free-7-days_GM1094591345.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/hack-coin-master-apk-ios_GM406889139.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/pubg-uc-2021_GM1330123889.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/robux-online_GM431946152.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/can-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/black-shirt-roblox-free_GM431946152.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/coin-master-daily-free-spins_GM406889139.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/how-do-you-get-free-roblox-money_GM431946152.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/wwwcoin-master-hack-game-download_GM406889139.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/how-to-get-minecraft-for-free-on-chromebook_GM479516143.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/minecraft-cheats-pc-2021_GM479516143.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/pubg-uc-redeem-code-generator_GM1330123889.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/make-robux_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
stream_004_off00004fe2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4FE2 27164 bytes
SHA-256: f4bc370d7754988802fc65106b2b542152d3bf8bfc527fbe3233bc39dfe11cfa
font_01_sfnt_off00008d0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D0F 18140 bytes
SHA-256: f519f995cc7d11a5c8073371bb4d0e8107d832e19d43c986e7d979153a054466