Malicious PDF — malware analysis report

Static analysis result for SHA-256 425157767cd5cfcf…

MALICIOUS

PDF

34.9 KB Created: 2021-06-22 20:46:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-15
MD5: 6ef495bbcced69818fdddae3a60475e2 SHA-1: 8c14c9d8ef2b16592bb334c8986266df88d49366 SHA-256: 425157767cd5cfcf99a9cddc047fc255d5886c8ef499be710dcfb6074f9694cc
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/406889139/coin-master-hack-2021-game-hack In PDF document text
    • https://elearning.manbondowoso.sch.id/__statics/gudangsoal/files/minecraft-windows-10-edition-hacks_GM479516143.pdfIn PDF document text
    • https://elearning.manbondowoso.sch.id/__statics/gudangsoal/files/coin-master-daily-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • https://elearning.manbondowoso.sch.id/__statics/gudangsoal/files/coin-master-daily-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://elearning.manbondowoso.sch.id/__statics/gudangsoal/files/free-tiktok-followers-no-downloads_GM835599320.pdfIn PDF document text
    • https://elearning.manbondowoso.sch.id/__statics/gudangsoal/files/how-do-we-get-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.manbondowoso.sch.id/__statics/gudangsoal/files/redeem-code-roblox-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.manbondowoso.sch.id/__statics/gudangsoal/files/is-coin-master-free_GM406889139.pdfIn PDF document text
    • https://elearning.manbondowoso.sch.id/__statics/gudangsoal/files/how-can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.manbondowoso.sch.id/__statics/gudangsoal/files/resourclyml-free-robux-code_GM431946152.pdfIn PDF document text
    • https://elearning.manbondowoso.sch.id/__statics/gudangsoal/files/how-to-get-pants-not-by-roblox-free_GM431946152.pdfIn PDF document text
    • https://elearning.manbondowoso.sch.id/__statics/gudangsoal/files/free-roblox-scripts_GM431946152.pdfIn PDF document text
    • https://elearning.manbondowoso.sch.id/__statics/gudangsoal/files/tiktok-like-bot-free_GM835599320.pdfIn PDF document text
    • https://elearning.manbondowoso.sch.id/__statics/gudangsoal/files/coin-master-hack-355_GM406889139.pdfIn PDF document text
    • https://elearning.manbondowoso.sch.id/__statics/gudangsoal/files/roblox-free-models_GM431946152.pdfIn PDF document text
    • https://elearning.manbondowoso.sch.id/__statics/gudangsoal/files/free-spin-coin_GM406889139.pdfIn PDF document text
    • https://elearning.manbondowoso.sch.id/__statics/gudangsoal/files/free-spin-generator-for-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.manbondowoso.sch.id/__statics/gudangsoal/files/coin-master-lucky-patcher-hack_GM406889139.pdfIn PDF document text
    • https://elearning.manbondowoso.sch.id/__statics/gudangsoal/files/free-robux-no-anti-bot-verification_GM431946152.pdfIn PDF document text
    • https://elearning.manbondowoso.sch.id/__statics/gudangsoal/files/roblox-hack-scripts-pastebin_GM431946152.pdfIn PDF document text
    • https://elearning.manbondowoso.sch.id/__statics/gudangsoal/files/minecraft-pe-016-0-apk-download-free_GM479516143.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_off000031d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31D4 22904 bytes
SHA-256: 21f5fca6f36b5e5aa8bfcb612bfe18c9a91f22c194ba5a293889e12b3a5388a1
font_01_sfnt_off0000653a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x653A 18408 bytes
SHA-256: 8438728008f6ab05b5c9a65d4eeb1f2e5c23a436eadc11c6e76328f72b7d7fb7

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