Malicious PDF — malware analysis report

Static analysis result for SHA-256 425f8f7866c3f943…

MALICIOUS

PDF

34.1 KB Created: 2021-07-01 14:26:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-15
MD5: 4c3f1746f953853afc1579a51eb0b4cf SHA-1: 96a7ca8a0751b714e4fcdc804798a361e6e26fff SHA-256: 425f8f7866c3f9436868545111e50ab7e2e61b4e0e5e03288f04d44db109af4a
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/how-to-use-someones-ip-on-roblox-to-hack-game-hack In PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/roblox-hack-me_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/coin-master-daily-rewards_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/get-free-roblox-today_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/coin-master-free-spins-hack_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/free-spins-coin-master-ios-2021_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/hacks-bacon-roblox_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/roblox-bux-cheats_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/pokemon-go-free_GM1094591345.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/minecraft-realms-free_GM479516143.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/roblox-hack-executor-2021_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/how-to-speed-hack-roblox-with-artmoney_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/robux-today_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/robloxcom-cheat-codes_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/coin-master-free-link-today_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/free-daily-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/roblox-codes-toys-free_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/how-to-get-free-comends-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/roblox-free-tops_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/ww-roblox-come_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/how-do-i-get-free-spins-on-coin-master_GM406889139.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_off00002e14.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2E14 22268 bytes
SHA-256: d580da625c27e5dac720e7e6e215768f534a51bc150dc5e5016787935f065249
font_01_sfnt_off00005f95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F95 19256 bytes
SHA-256: 579de8c27c61a18454ed3d58f62a5fc6eb709f4d4c5ed06738e642b4d528b5a2