Malicious PDF — malware analysis report

Static analysis result for SHA-256 72b97d832a98e583…

MALICIOUS

PDF

42.7 KB Created: 2021-06-13 23:20:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-28
MD5: a88be2549135afb4dee00f0c68f16a22 SHA-1: 36cf1294ec06f8b890ea6dbb1b377d3561047df5 SHA-256: 72b97d832a98e583ab0a961e93a6f8d250d797c31731444deeb2e7c41cd5f985
200 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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.
  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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-roblox-gift-codes-2021-game-hack In PDF document text
    • https://www.casanz.org.au/wp-content/uploads/fsqm-files/how-to-earn-robux-in-roblox-free_GM431946152.pdfIn PDF document text
    • https://www.casanz.org.au/wp-content/uploads/fsqm-files/roblox-hack-robux-2021-pc_GM431946152.pdfIn PDF document text
    • https://www.casanz.org.au/wp-content/uploads/fsqm-files/how-to-get-the-skeleton-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://www.casanz.org.au/wp-content/uploads/fsqm-files/leviving-hack-roblox_GM431946152.pdfIn PDF document text
    • https://www.casanz.org.au/wp-content/uploads/fsqm-files/roblox-4-free_GM431946152.pdfIn PDF document text
    • https://www.casanz.org.au/wp-content/uploads/fsqm-files/how-to-hack-roblox-with-cheat-engine-66_GM431946152.pdfIn PDF document text
    • https://www.casanz.org.au/wp-content/uploads/fsqm-files/how-to-get-free-cars-in-roblox-ultimate-driving_GM431946152.pdfIn PDF document text
    • https://www.casanz.org.au/wp-content/uploads/fsqm-files/how-to-get-free-robux-onroblox-and-pastebin_GM431946152.pdfIn PDF document text
    • https://www.casanz.org.au/wp-content/uploads/fsqm-files/roblox-hack-deutsch-auf-pc-robux_GM431946152.pdfIn PDF document text
    • https://www.casanz.org.au/wp-content/uploads/fsqm-files/ad-robux-hack_GM431946152.pdfIn PDF document text
    • https://www.casanz.org.au/wp-content/uploads/fsqm-files/fastest-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.casanz.org.au/wp-content/uploads/fsqm-files/free-roblox-code-items-2021_GM431946152.pdfIn PDF document text
    • https://www.casanz.org.au/wp-content/uploads/fsqm-files/free-24-7-minecraft-server_GM479516143.pdfIn PDF document text
    • https://www.casanz.org.au/wp-content/uploads/fsqm-files/free-roblox-card-generator-no-surveys_GM431946152.pdfIn PDF document text
    • https://www.casanz.org.au/wp-content/uploads/fsqm-files/robux-cheats-no-human-verification_GM431946152.pdfIn PDF document text
    • https://www.casanz.org.au/wp-content/uploads/fsqm-files/roblox-hacker-kolorowanki-do-druku_GM431946152.pdfIn PDF document text
    • https://www.casanz.org.au/wp-content/uploads/fsqm-files/banning-simulator-roblox-get-all-gamepasses-for-free_GM431946152.pdfIn PDF document text
    • https://www.casanz.org.au/wp-content/uploads/fsqm-files/roblox-jailbreak-hack_GM431946152.pdfIn PDF document text
    • https://www.casanz.org.au/wp-content/uploads/fsqm-files/how-to-cheat-in-roblox-jailbreak-2021_GM431946152.pdfIn PDF document text
    • https://www.casanz.org.au/wp-content/uploads/fsqm-files/roblox-robot-inc-cheat_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_003_off00004a9f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A9F 24728 bytes
SHA-256: 88a679e3c045b407291bd8bc3ff27f62c255117ad01bc1e9317ffa091f543bd5
font_01_sfnt_off0000831e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x831E 18748 bytes
SHA-256: dc432765f3f82a6955d5eb5801c52a4170d36eb3be47fdc7177303cca9fcd048

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