Malicious PDF — malware analysis report

Static analysis result for SHA-256 478f1ce697f9b46c…

MALICIOUS

PDF

42.2 KB Created: 2021-05-12 02:17:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-20
MD5: 3a2148d30645c780b7eda5c44e5dda21 SHA-1: 86ee5d92ffe8ff20c5c23743606d4ec4679fc726 SHA-256: 478f1ce697f9b46c19393f035e1a588cd856374a63aab6277c5ed8c99f043a5d
160 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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.xyz/app/406889139/free-spin-link-of-coin-master-game-hack In PDF document text
    • https://www.sman3amlapura.sch.id/new/public/ckfinder/userfiles/files/coin-master-hack-version-2021-download_GM406889139.pdfIn PDF document text
    • https://www.sman3amlapura.sch.id/new/public/ckfinder/userfiles/files/roblox-zone-free-robux_GM431946152.pdfIn PDF document text
    • https://www.sman3amlapura.sch.id/new/public/ckfinder/userfiles/files/how-to-get-free-faces-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.sman3amlapura.sch.id/new/public/ckfinder/userfiles/files/minecraft-servers-that-allow-hacks_GM479516143.pdfIn PDF document text
    • https://www.sman3amlapura.sch.id/new/public/ckfinder/userfiles/files/how-to-hack-peoples-roblox-accounts_GM431946152.pdfIn PDF document text
    • https://www.sman3amlapura.sch.id/new/public/ckfinder/userfiles/files/how-to-get-free-coins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://www.sman3amlapura.sch.id/new/public/ckfinder/userfiles/files/how-to-get-free-roblox_GM431946152.pdfIn PDF document text
    • https://www.sman3amlapura.sch.id/new/public/ckfinder/userfiles/files/free-roblox-followers_GM431946152.pdfIn PDF document text
    • https://www.sman3amlapura.sch.id/new/public/ckfinder/userfiles/files/how-to-get-free-followers-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.sman3amlapura.sch.id/new/public/ckfinder/userfiles/files/daily-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.sman3amlapura.sch.id/new/public/ckfinder/userfiles/files/how-to-make-robux_GM431946152.pdfIn PDF document text
    • https://www.sman3amlapura.sch.id/new/public/ckfinder/userfiles/files/minecraft-svg-free_GM479516143.pdfIn PDF document text
    • https://www.sman3amlapura.sch.id/new/public/ckfinder/userfiles/files/coin-master-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
    • https://www.sman3amlapura.sch.id/new/public/ckfinder/userfiles/files/free-script-executor-roblox_GM431946152.pdfIn PDF document text
    • https://www.sman3amlapura.sch.id/new/public/ckfinder/userfiles/files/promo-codes-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.sman3amlapura.sch.id/new/public/ckfinder/userfiles/files/coins-master-hack_GM406889139.pdfIn PDF document text
    • https://www.sman3amlapura.sch.id/new/public/ckfinder/userfiles/files/coin-master-free-spin-and-coins-links_GM406889139.pdfIn PDF document text
    • https://www.sman3amlapura.sch.id/new/public/ckfinder/userfiles/files/minecraft-free-download-laptop_GM479516143.pdfIn PDF document text
    • https://www.sman3amlapura.sch.id/new/public/ckfinder/userfiles/files/http-bit-ly-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://www.sman3amlapura.sch.id/new/public/ckfinder/userfiles/files/free-robux-generator-no-survey_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_003_off00004b8b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B8B 24400 bytes
SHA-256: a61c85b7d1129a3fdf5695f760653372bfb31efdb78a3cd6010661c3b35cbd52
font_01_sfnt_off00008361.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8361 18056 bytes
SHA-256: 356c08646bfbef9f69d0ba55babd40c7485a9f64db237320543c80bb2a18a5c5

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