Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3e28d6ccb7136f3…

MALICIOUS

PDF

33.0 KB Created: 2021-06-28 22:02:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-21
MD5: 698b68e624ac06f8b4ce3fbe07e8b44c SHA-1: 5ec1e44ad88f58f99300224a05eaf4f5814aa8a1 SHA-256: d3e28d6ccb7136f3fbce8c858649b5017c6e1a8c41d41e3a462c9ee58e8a03d4
160 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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/free-roblox-for-roblox-2021-game-hack In PDF document text
    • https://pustaka.stie-pembangunan.ac.id/repository/como-hackear-juego-coin-master_GM406889139.pdfIn PDF document text
    • https://pustaka.stie-pembangunan.ac.id/repository/mc-update_GM479516143.pdfIn PDF document text
    • https://pustaka.stie-pembangunan.ac.id/repository/minecraft-games-online-free-no-download_GM479516143.pdfIn PDF document text
    • https://pustaka.stie-pembangunan.ac.id/repository/coin-master-332-apk-free-download_GM406889139.pdfIn PDF document text
    • https://pustaka.stie-pembangunan.ac.id/repository/free-robux-promo-codes-2021_GM431946152.pdfIn PDF document text
    • https://pustaka.stie-pembangunan.ac.id/repository/coin-master-rare-cards-hack_GM406889139.pdfIn PDF document text
    • https://pustaka.stie-pembangunan.ac.id/repository/coin-master-70-spin-link-2021_GM406889139.pdfIn PDF document text
    • https://pustaka.stie-pembangunan.ac.id/repository/pain-exist-roblox-jailbreak-hack_GM431946152.pdfIn PDF document text
    • https://pustaka.stie-pembangunan.ac.id/repository/how-to-hack-roblox_GM431946152.pdfIn PDF document text
    • https://pustaka.stie-pembangunan.ac.id/repository/how-to-hack-death-run-roblox-cheat-engine-2021_GM431946152.pdfIn PDF document text
    • https://pustaka.stie-pembangunan.ac.id/repository/2021-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://pustaka.stie-pembangunan.ac.id/repository/how-to-make-free-robux-with-bc_GM431946152.pdfIn PDF document text
    • https://pustaka.stie-pembangunan.ac.id/repository/how-to-get-free-robux-2021-on-ipad_GM431946152.pdfIn PDF document text
    • https://pustaka.stie-pembangunan.ac.id/repository/free-robux-generator-com-roblox-hack_GM431946152.pdfIn PDF document text
    • https://pustaka.stie-pembangunan.ac.id/repository/free-robux-with-inspect_GM431946152.pdfIn PDF document text
    • https://pustaka.stie-pembangunan.ac.id/repository/free-girl-hair-roblox_GM431946152.pdfIn PDF document text
    • https://pustaka.stie-pembangunan.ac.id/repository/real-robux-generator_GM431946152.pdfIn PDF document text
    • https://pustaka.stie-pembangunan.ac.id/repository/free-robux-for-humans_GM431946152.pdfIn PDF document text
    • https://pustaka.stie-pembangunan.ac.id/repository/2021-free-robux-daily-robuxian_GM431946152.pdfIn PDF document text
    • https://pustaka.stie-pembangunan.ac.id/repository/free-daily-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
font_00_sfnt_off00002ac2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2AC2 22128 bytes
SHA-256: 69cbd75adfcf09a43336d5c40245af5af2835c0280cdde6336cc31742c0c8488
font_01_sfnt_off00005be5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BE5 19052 bytes
SHA-256: f6df5e0d93465dee71f41ac3731c375a03a441964b87212df86cea4bed251236

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