Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d842d9b225b6a2e…

MALICIOUS

PDF

34.6 KB Created: 2021-06-28 11:52:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-18
MD5: fdff72c3f3dbbb21ace99d3e19e1a4a1 SHA-1: 99eb35ec974bcf69064b498ed9db4041d714daaa SHA-256: 5d842d9b225b6a2e21f175fa031a5635fb76efd7b8f0f804c75447699680a3d6
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/roblox-hack-sharder-game-hack In PDF document text
    • http://opac.kolejkrim.edu.my/repository/hack-roblox-2021-jail-bteak_GM431946152.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/roblox-dungeon-quest-hack-free-download_GM431946152.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/how-to-be-a-hacker-in-roblox-on-ipad_GM431946152.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/free-robux-discord-bot_GM431946152.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/cheat-engine-for-roblox-april_GM431946152.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/coin-master-hack-fast_GM406889139.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/free-coins-2021-coin-master-link_GM406889139.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/haktuts-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/how-to-earn-free-robuxs_GM431946152.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/easy-working-ways-to-earn-robux-for-free_GM431946152.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/coin-master-free-spins-5-10-2021_GM406889139.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/how-can-you-hi-dont-know-hack-roblox_GM431946152.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/free-tokens-roblox-assassin_GM431946152.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/free-auto-clicker-for-roblox-mobile_GM431946152.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/roblox-cheat-codes_GM431946152.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/minecraft-bedrock-edition-free_GM479516143.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/roblox-earn_GM431946152.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/your-free-trial-of-living-has-expired-roblox-meme_GM431946152.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/orewards-com-free-robux_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_off0000312d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x312D 22268 bytes
SHA-256: a2f6d72faeded50f9622ad95b925fb5303b0fed9bbb1e2caf442e27545b0c9e6
font_01_sfnt_off00006260.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6260 18996 bytes
SHA-256: 68c220dae82b8148dc3891b536eb18af47fe8dc28b03dfc58f1ba35d41e9e98e