Malicious PDF — malware analysis report

Static analysis result for SHA-256 9415fa2d43c9f0e2…

MALICIOUS

PDF

50.3 KB Created: 2021-06-09 12:32:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-12
MD5: 0721ba321039caf0f0cbf7a04c8db683 SHA-1: 20127564adfbf5ef65c5a3688e7abe216d63f235 SHA-256: 9415fa2d43c9f0e2797e8ddf5a7deda38356a39e878eb07b92d257ec5c8191b3
160 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

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 https://netcdn.tw/app/431946152/roblox-robux-hack-generator-download-game-hack In PDF document text
    • https://digilib.stikesindramayu.ac.id/repository/free-robux-discord_GM431946152.pdfIn PDF document text
    • https://digilib.stikesindramayu.ac.id/repository/javascript-free-robux_GM431946152.pdfIn PDF document text
    • https://digilib.stikesindramayu.ac.id/repository/100-free-spins-coin-master-link_GM406889139.pdfIn PDF document text
    • https://digilib.stikesindramayu.ac.id/repository/gold-cards-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://digilib.stikesindramayu.ac.id/repository/coin-master-unlimited-spin-apk-free-download_GM406889139.pdfIn PDF document text
    • https://digilib.stikesindramayu.ac.id/repository/roblox-girl-characters-free_GM431946152.pdfIn PDF document text
    • https://digilib.stikesindramayu.ac.id/repository/tiktok-free-10-followers_GM835599320.pdfIn PDF document text
    • https://digilib.stikesindramayu.ac.id/repository/robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://digilib.stikesindramayu.ac.id/repository/80-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://digilib.stikesindramayu.ac.id/repository/coin-master-links-for-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://digilib.stikesindramayu.ac.id/repository/hacker-minecraft-song_GM479516143.pdfIn PDF document text
    • https://digilib.stikesindramayu.ac.id/repository/coin-master-daily-free-spins-hack_GM406889139.pdfIn PDF document text
    • https://digilib.stikesindramayu.ac.id/repository/roblox-free-exploits_GM431946152.pdfIn PDF document text
    • https://digilib.stikesindramayu.ac.id/repository/coin-master-free-coins-link-2021_GM406889139.pdfIn PDF document text
    • https://digilib.stikesindramayu.ac.id/repository/free-minecraft-account-and-password-2021_GM479516143.pdfIn PDF document text
    • https://digilib.stikesindramayu.ac.id/repository/coin-master-hack-pro-gamers_GM406889139.pdfIn PDF document text
    • https://digilib.stikesindramayu.ac.id/repository/minecraft-windows-10-free-trial_GM479516143.pdfIn PDF document text
    • https://digilib.stikesindramayu.ac.id/repository/coin-master-apk-hack-358_GM406889139.pdfIn PDF document text
    • https://digilib.stikesindramayu.ac.id/repository/rbxoffer-com-free-robux_GM431946152.pdfIn PDF document text
    • https://digilib.stikesindramayu.ac.id/repository/coin-and-spin-link_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005410.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5410 27788 bytes
SHA-256: 862cd6e42e5d46cf8006469895b6f36e81b673e3b29b5e47becbce0ff137ec37
font_01_sfnt_off00009325.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9325 3816 bytes
SHA-256: 2d9d75e494d9a687199740dbba1d05fbcfe9413744e4ef2444a7233d82c7012f
font_02_sfnt_off00009fcf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9FCF 18932 bytes
SHA-256: 9ac6f7277d2ba4dc69e55e56ebcb50240260731d9fe7919baf97e67670eb2dcf

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