Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3ed00edcd5a3f28…

MALICIOUS

PDF

34.4 KB Created: 2021-06-25 18:56:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-21
MD5: 0ea053c73bb1a11942d4db5fd79aec56 SHA-1: 918b213d4be6f77ff541d590af8fcd2adad45751 SHA-256: d3ed00edcd5a3f2815f556c4aff042bc5f5bcbd0156695647340243167da21e1
180 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9984

Heuristics 5

  • 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.
  • Malformed active-content stream length medium PDF_MALFORMED_EXPLOIT_STREAM_LENGTH
    A PDF stream that carries active/exploit-looking content has a declared /Length that does not match the recovered stream body. Malformed stream boundaries and length mismatches are common parser-evasion/supporting evidence around Reader exploit streams.
  • 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/free-robux-and-tix-generator-2021-game-hack In PDF document text
    • http://cintabaca.org/katalog/repository/roblox-gift-card-for-free_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/chat-hack-roblox-download_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/how-can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/how-to-get-free-robux-on-pc_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/roblox-twisted-murderer-free-radio_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog//repository/free-minecraft-java-code_GM479516143.pdfIn PDF document text
    • http://cintabaca.org/katalog//repository/minecraft-hack-ios_GM479516143.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/how-to-get-free-hats-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/hack-ghost-simulator-roblox-september_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog//repository/free-robux-without-survey_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog//repository/op-rewards-free-robux_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/free-robux-games-on-roblox_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/free-spins-from-coin-master_GM406889139.pdfIn PDF document text
    • http://cintabaca.org/katalog//repository/how-do-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/mega-hack-download-roblox_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/minecraft-free-apk_GM479516143.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/how-to-get-free-robux-indieun_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog//repository/roblox-promo-code-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/2021-free-robux-generator_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
font_00_sfnt_off00002e8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E8B 22168 bytes
SHA-256: 55b53c33c7ee30f802bbb8184541a32378fadd3d0f5ab292c0abfdc490fd711e
font_01_sfnt_off00005fc9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FC9 19516 bytes
SHA-256: cb7d0e0d560f0094611ce6edf85a8cda10decf57509cba65b5950ef76b68ff9b

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