Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3e3f0c584f6141e…

MALICIOUS

PDF

35.2 KB Created: 2021-07-03 11:58:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-21
MD5: f4dab9cb0aee5806e3fc30f1c0d26172 SHA-1: f5f1ecfff3f36bf2b44d5fc3e083e66bdf029788 SHA-256: d3e3f0c584f6141e0eb9f83cd5303c80ddb109f9eb6e545f8fbd13d6e44ef4da
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/406889139/coin-master-hack-2021-android-apk-game-hack In PDF document text
    • https://ambasador.md/ckfinder/userfiles/files/robux-only_GM431946152.pdfIn PDF document text
    • https://ambasador.md/ckfinder/userfiles/files/free-roblox-followers_GM431946152.pdfIn PDF document text
    • https://ambasador.md/ckfinder/userfiles/files/best-free-roblox-exploits-v3rmillion_GM431946152.pdfIn PDF document text
    • https://ambasador.md/ckfinder/userfiles/files/robloxgiveaways-top-roblox-hack_GM431946152.pdfIn PDF document text
    • https://ambasador.md/ckfinder/userfiles/files/free-robux-app-store_GM431946152.pdfIn PDF document text
    • https://ambasador.md/ckfinder/userfiles/files/tiktok-free-followers-generator_GM835599320.pdfIn PDF document text
    • https://ambasador.md/ckfinder/userfiles/files/how-to-start-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • https://ambasador.md/ckfinder/userfiles/files/coin-master-hack-2021-android-apk_GM406889139.pdfIn PDF document text
    • https://ambasador.md/ckfinder/userfiles/files/wwwrobux-cheat-us-unlimited_GM431946152.pdfIn PDF document text
    • https://ambasador.md/ckfinder/userfiles/files/how-to-not-get-your-roblox-account-hacked_GM431946152.pdfIn PDF document text
    • https://ambasador.md/ckfinder/userfiles/files/free-roblox-clothes-girl_GM431946152.pdfIn PDF document text
    • https://ambasador.md/ckfinder/userfiles/files/coin-master-hack-version-download_GM406889139.pdfIn PDF document text
    • https://ambasador.md/ckfinder/userfiles/files/roblox-clone-hack_GM431946152.pdfIn PDF document text
    • https://ambasador.md/ckfinder/userfiles/files/free-roblox-cards-pin-number_GM431946152.pdfIn PDF document text
    • https://ambasador.md/ckfinder/userfiles/files/free-minecraft-alts_GM479516143.pdfIn PDF document text
    • https://ambasador.md/ckfinder/userfiles/files/how-to-get-free-roblox-gift-cards_GM431946152.pdfIn PDF document text
    • https://ambasador.md/ckfinder/userfiles/files/how-to-get-free-robux-for-real_GM431946152.pdfIn PDF document text
    • https://ambasador.md/ckfinder/userfiles/files/how-do-u-get-robux-for-free-on-roblox_GM431946152.pdfIn PDF document text
    • https://ambasador.md/ckfinder/userfiles/files/how-to-get-roblox-credit-for-free_GM431946152.pdfIn PDF document text
    • https://ambasador.md/ckfinder/userfiles/files/cheat-roblox-lumber-tyccon_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_002_off000031b9.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x31B9 23020 bytes
SHA-256: c4b49733e5d84161af41358859c0cd071e79a7842c1afe5dbd8cb0319bc41249
font_01_sfnt_off00006575.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6575 18756 bytes
SHA-256: 72ad81d79aafbf47c073aedbc758c34146f887a61fb970b48a172e8564c4bbba

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