Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd7f519fc624529d…

MALICIOUS

PDF

52.0 KB Created: 2021-06-11 00:42:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-19
MD5: 59aa6af8ff7659855998351416a14ace SHA-1: 13fc47601394e7da8d0e9cb1ad12e3172c4f3d85 SHA-256: cd7f519fc624529dcdbfa11968a926bb5945e34efdaf89da5d8e5192fbd2821c
200 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9850

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.
  • Launch action high PDF_LAUNCH
    PDF contains a /Launch action with an unresolved or extension-less target — treat as potentially dangerous
  • 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-a-bizarre-day-hack-game-hack In PDF document text
    • https://privatearrangements.co.nz/public/files/how-to-get-epic-face-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://privatearrangements.co.nz/public/files/free-tiktok-views_GM835599320.pdfIn PDF document text
    • https://privatearrangements.co.nz/public/files/robux-survey_GM431946152.pdfIn PDF document text
    • https://privatearrangements.co.nz/public/files/coin-master-hack-software_GM406889139.pdfIn PDF document text
    • https://privatearrangements.co.nz/public/files/roblox-how-to-get-free-clothes_GM431946152.pdfIn PDF document text
    • https://privatearrangements.co.nz/public/files/funbloxxyz-free-robux_GM431946152.pdfIn PDF document text
    • https://privatearrangements.co.nz/public/files/thebuxian-get-roblox-ninja-animation-free_GM431946152.pdfIn PDF document text
    • https://privatearrangements.co.nz/public/files/launch-roblox-hacks_GM431946152.pdfIn PDF document text
    • https://privatearrangements.co.nz/public/files/aimbot-download-roblox_GM431946152.pdfIn PDF document text
    • https://privatearrangements.co.nz/public/files/minecraft-ps4-code-free_GM479516143.pdfIn PDF document text
    • https://privatearrangements.co.nz/public/files/free-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • https://privatearrangements.co.nz/public/files/free-robux-easy-and-fast_GM431946152.pdfIn PDF document text
    • https://privatearrangements.co.nz/public/files/roblox-e-free_GM431946152.pdfIn PDF document text
    • https://privatearrangements.co.nz/public/files/free-minecraft-hosting_GM479516143.pdfIn PDF document text
    • https://privatearrangements.co.nz/public/files/coin-master-daily-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://privatearrangements.co.nz/public/files/free-2021-robux_GM431946152.pdfIn PDF document text
    • https://privatearrangements.co.nz/public/files/free-spins-on-coin-master-link_GM406889139.pdfIn PDF document text
    • https://privatearrangements.co.nz/public/files/how-to-get-free-spins-on-coin-master-without-waiting_GM406889139.pdfIn PDF document text
    • https://privatearrangements.co.nz/public/files/coin-master-free-spin-app-2021_GM406889139.pdfIn PDF document text
    • https://privatearrangements.co.nz/public/files/free-robux-mobile_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_004_off0000540d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x540D 38712 bytes
SHA-256: a67615ba988cb9e6476fdc07adc9caeb5ffaeb80edd96ba383a4104d00fdc43f
font_01_sfnt_off0000a7fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA7FD 18732 bytes
SHA-256: 13f174502a2c1ad8eefcb58144913e1bcbc0d287f711b7f267cc52bf5d5f17d2

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