Malicious PDF — malware analysis report

Static analysis result for SHA-256 3dd5ff59ccb2e6fd…

MALICIOUS

PDF

52.9 KB Created: 2021-06-10 17:50:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-26
MD5: e08dea2300ab3fdc0925a9086b7b6f25 SHA-1: 8bb0c49551beaf3c8919c2938525bceaaff3302e SHA-256: 3dd5ff59ccb2e6fd0ddc8c2b9ad3ad79d72fe66b7ed80d8b8950dedd1c84a058
160 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9294

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.tw/app/431946152/roblox-uploader-for-free-game-hack In PDF document text
    • http://oca.undil.tl/repository/free-robux-no-sign-up_GM431946152.pdfIn PDF document text
    • http://oca.undil.tl/repository/how-to-hack-into-someones-roblox-account_GM431946152.pdfIn PDF document text
    • http://oca.undil.tl/repository/real-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://oca.undil.tl/repository/how-to-get-free-robux-2021-easy_GM431946152.pdfIn PDF document text
    • http://oca.undil.tl/repository/minecraft-pe-free-apk_GM479516143.pdfIn PDF document text
    • http://oca.undil.tl/repository/roblox-hack-generator_GM431946152.pdfIn PDF document text
    • http://oca.undil.tl/repository/how-to-get-more-robux-for-free_GM431946152.pdfIn PDF document text
    • http://oca.undil.tl/repository/free-spin-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://oca.undil.tl/repository/free-spin-coin-master-link-today_GM406889139.pdfIn PDF document text
    • http://oca.undil.tl/repository/free-robux-generator-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://oca.undil.tl/repository/free-2021-robux_GM431946152.pdfIn PDF document text
    • http://oca.undil.tl/repository/rbx-free-robux_GM431946152.pdfIn PDF document text
    • http://oca.undil.tl/repository/daily-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://oca.undil.tl/repository/roblox-games-com-free_GM431946152.pdfIn PDF document text
    • http://oca.undil.tl/repository/microsoft-roblox_GM431946152.pdfIn PDF document text
    • http://oca.undil.tl/repository/www-rubux_GM431946152.pdfIn PDF document text
    • http://oca.undil.tl/repository/roblox-old-avatar_GM431946152.pdfIn PDF document text
    • http://oca.undil.tl/repository/get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://oca.undil.tl/repository/free-money-and-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://oca.undil.tl/repository/free-robux-hacks-no-verification_GM431946152.pdfIn PDF document text
    • http://192.168.0.99/%20%3Cp%3E%3Cp%3E1000%20robux%20promo%20code%20Archives%20-%20Roblox%20Promo%20Codes%202020.%20Most%20Popular%20Newest%20at%20www.robloxpromocodes.net%20Roblox%20Promo%20Codes%20For%20Robux%20%E2%80%93%20On%20Roblox,%20a%20promotional%20code%20or%20simply%20Roblox%20promo%20code%20is%20a%20piece%20of%20text%20that%20can%20be%20redeemed%20for%20a%20special%20item.%20They%20are%20only%20given%20out%20by%20official%20Roblox%20Staff%20members.%3Cp%3E%3Cp%3Eroblox%20free%20staffs%3Cp%3E%3Cp%3Ehow%20to%20get%2050%20free%20robux%3Cp%3E%3Cp%3Eget%20free%20robux%20fast%20and%20easy%20no%20offer%20no%20verification%3Cp%3E%3Cp%3ERoblox%20Robux%20Generator.%20Enter%20the%20required%20details%20below%20to%20connect%20your%20Roblux%20account%20and%20generate%20unlimited%20robux.%20Connect.%20Max%20Robux:%2099,999.%20Submit.%20Processing..%20...%20Dims%20Caillian%20wow%20this%20is%20awesome%20tool,%20thanks%20received%20my%20robux%20:D%20@@!@%3Cp%3E%3Cp%3Efree%20offers%20for%20robux%20today%3Cp%3E%3Cp%3Ehow%20to%20get%20free%20robux%20without%20downloading%20anything%202020%3Cp%3E%3Cp%3Etake%20a%20quize%20for%20free%20robux%20gift%20card%3Cp%3E%3Cp%3Eroblox%20oof%20sound%20copyright%20free%3Cp%3E%3Cp%3Ebest%20tycoon%20for%20roblox%20for%20free%3Cp%3E%3Cp%3Ecomo%20usar%20hacks%20en%20jailbreak%20roblox%3Cp%3E%3Cp%3EWhat%20are%20Roblox%20Gift%20Card%20Codes?%20When%20youIn 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_off000074a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74A4 24964 bytes
SHA-256: 5e619b2f07fb842c57c47be6d0d5f8882bf2cc8721b1fae39b38cf10a612b604
font_01_sfnt_off0000ab88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAB88 18712 bytes
SHA-256: 4d984ae1a1dc866a7d7dcd446310102725fb5a9a701cab3892d75ad8658dbf1b