Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9971969bd3f4144…

MALICIOUS

PDF

34.5 KB Created: 2021-07-02 06:14:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-13
MD5: 871a5e4bf05d1cd949677ca64777f889 SHA-1: 6d7252faddfb11fe17710898a2c020a08387ffb7 SHA-256: f9971969bd3f41445314251c0311432afb99ecedd05c11d768382c0896bb3679
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/robux-hack-tool-no-human-verification-game-hack In PDF document text
    • http://www.readandenjoy.ae/userfiles/files/coin-master-cheat-free_GM406889139.pdfIn PDF document text
    • http://www.readandenjoy.ae/userfiles/files/free-roblox-gift-card-codes-2021-generator_GM431946152.pdfIn PDF document text
    • http://www.readandenjoy.ae/userfiles/files/what-is-exploiting-in-roblox_GM431946152.pdfIn PDF document text
    • http://www.readandenjoy.ae/userfiles/files/http-bitly-coin-master-free-2021-spins_GM406889139.pdfIn PDF document text
    • http://www.readandenjoy.ae/userfiles/files/minecraft-cracked-client_GM479516143.pdfIn PDF document text
    • http://www.readandenjoy.ae/userfiles/files/make-free-robux_GM431946152.pdfIn PDF document text
    • http://www.readandenjoy.ae/userfiles/files/blox-world-free-robux_GM431946152.pdfIn PDF document text
    • http://www.readandenjoy.ae/userfiles/files/games-that-can-be-hacked_GM431946152.pdfIn PDF document text
    • http://www.readandenjoy.ae/userfiles/files/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://www.readandenjoy.ae/userfiles/files/pubg-uc-ykleme_GM1330123889.pdfIn PDF document text
    • http://www.readandenjoy.ae/userfiles/files/free-roblox-accounts-generator_GM431946152.pdfIn PDF document text
    • http://www.readandenjoy.ae/userfiles/files/how-to-do-a-peppa-hack-roblox_GM431946152.pdfIn PDF document text
    • http://www.readandenjoy.ae/userfiles/files/coin-master-70-spin-link-2021_GM406889139.pdfIn PDF document text
    • http://www.readandenjoy.ae/userfiles/files/get-robux_GM431946152.pdfIn PDF document text
    • http://www.readandenjoy.ae/userfiles/files/roblox-apk-hack_GM431946152.pdfIn PDF document text
    • http://www.readandenjoy.ae/userfiles/files/roblox-studio-free-robux_GM431946152.pdfIn PDF document text
    • http://www.readandenjoy.ae/userfiles/files/roblox-dungeon-quest-hack-script_GM431946152.pdfIn PDF document text
    • http://www.readandenjoy.ae/userfiles/files/free-robux-gift-card-codes_GM431946152.pdfIn PDF document text
    • http://www.readandenjoy.ae/userfiles/files/how-to-get-free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://www.readandenjoy.ae/userfiles/files/coinmaster_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
font_00_sfnt_off00002ec7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EC7 22460 bytes
SHA-256: ef930f24b1ae23428fa7010a93a48222fb0e25433e4f2a4876f9bcee8c370695
font_01_sfnt_off000060bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60BB 19412 bytes
SHA-256: fd0e344fd56c743c25797f89baee59cda430c08598d6e479cbf794d11066caae

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