Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5d97dfcb604f0b7…

MALICIOUS

PDF

35.2 KB Created: 2021-06-28 03:01:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-28
MD5: 53563d92784633c4f83854226dd68efa SHA-1: a87109203650a2756e05283ef700ee7b8b26103f SHA-256: c5d97dfcb604f0b706d599d516d34f6b57db5fe0f427cf9cf012cdc342c77801
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/hack-roblox-descargar-pc-game-hack In PDF document text
    • http://camphat.com.vn/upload/UploadFiles/files/free-robux-live-giveaway-group_GM431946152.pdfIn PDF document text
    • http://camphat.com.vn/upload/UploadFiles/files/nopde-engine-lua-script-hack-roblox_GM431946152.pdfIn PDF document text
    • http://camphat.com.vn/upload/UploadFiles/files/how-to-cheat-roblox-tycoons_GM431946152.pdfIn PDF document text
    • http://camphat.com.vn/upload/UploadFiles/files/roblox-catalog-free_GM431946152.pdfIn PDF document text
    • http://camphat.com.vn/upload/UploadFiles/files/coin-master-golden-cards-hack_GM406889139.pdfIn PDF document text
    • http://camphat.com.vn/upload/UploadFiles/files/op-rewards-free-robux_GM431946152.pdfIn PDF document text
    • http://camphat.com.vn/upload/UploadFiles/files/how-to-get-free-roebucks-in-roblox_GM431946152.pdfIn PDF document text
    • http://camphat.com.vn/upload/UploadFiles/files/http-bitly-coin-master-free-2021-spins_GM406889139.pdfIn PDF document text
    • http://camphat.com.vn/upload/UploadFiles/files/ways-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://camphat.com.vn/upload/UploadFiles/files/roblox-grinding-cheat_GM431946152.pdfIn PDF document text
    • http://camphat.com.vn/upload/UploadFiles/files/coin-master-heaven-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://camphat.com.vn/upload/UploadFiles/files/coin-master-free-spin-daily-link_GM406889139.pdfIn PDF document text
    • http://camphat.com.vn/upload/UploadFiles/files/roblox-free-download-no-virus_GM431946152.pdfIn PDF document text
    • http://camphat.com.vn/upload/UploadFiles/files/minecraft-app-store-free_GM479516143.pdfIn PDF document text
    • http://camphat.com.vn/upload/UploadFiles/files/coin-master-free-spin-today_GM406889139.pdfIn PDF document text
    • http://camphat.com.vn/upload/UploadFiles/files/how-to-make-everything-free-in-roblox_GM431946152.pdfIn PDF document text
    • http://camphat.com.vn/upload/UploadFiles/files/minecraft-windows-10-edition-unlock-full-game-free_GM479516143.pdfIn PDF document text
    • http://camphat.com.vn/upload/UploadFiles/files/how-to-hack-into-someones-roblox-account_GM431946152.pdfIn PDF document text
    • http://camphat.com.vn/upload/UploadFiles/files/roblox-hack-download_GM431946152.pdfIn PDF document text
    • http://camphat.com.vn/upload/UploadFiles/files/free-spins-and-coins-coin-master-2021-link_GM406889139.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_off00003430.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3430 21952 bytes
SHA-256: 0684bb83904067a6e3f5ad4d810f0e0a11219fbd65e5daca1db87f8f5b84fe78
font_01_sfnt_off000064a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64A1 18980 bytes
SHA-256: d10778378b17c820b4172743256768cc99fa0bcb5bb04931fa05b2cece39656a

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