Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd7ca79b32a415be…

MALICIOUS

PDF

34.5 KB Created: 2021-06-18 10:53:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-19
MD5: 55bca7a34b99446b38d84b9d2e6b2037 SHA-1: 242aca10bc1fdf3034d23ebc8ca6bcf225258f9c SHA-256: cd7ca79b32a415be9055d194f7013e946f760f0d2266c638478249970577c39c
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/orewards-com-free-robux-game-hack In PDF document text
    • http://pustaka.industri.ft.unand.ac.id/repository/cheat-strucid-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.industri.ft.unand.ac.id/repository/free-minecraft-domain_GM479516143.pdfIn PDF document text
    • http://pustaka.industri.ft.unand.ac.id/repository/free-roblox-no-surveys-or-download_GM431946152.pdfIn PDF document text
    • http://pustaka.industri.ft.unand.ac.id/repository/hack-roblox-com_GM431946152.pdfIn PDF document text
    • http://pustaka.industri.ft.unand.ac.id/repository/roblox-cb-ro-hack-download_GM431946152.pdfIn PDF document text
    • http://pustaka.industri.ft.unand.ac.id/repository/cosas-free-en-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.industri.ft.unand.ac.id/repository/minecraft-login-free_GM479516143.pdfIn PDF document text
    • http://pustaka.industri.ft.unand.ac.id/repository/free-roblox-without-download_GM431946152.pdfIn PDF document text
    • http://pustaka.industri.ft.unand.ac.id/repository/coin-master-free-spins-and-coins-daily_GM406889139.pdfIn PDF document text
    • http://pustaka.industri.ft.unand.ac.id/repository/group-gives-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.industri.ft.unand.ac.id/repository/coin-master-daily-free-spins-link-app_GM406889139.pdfIn PDF document text
    • http://pustaka.industri.ft.unand.ac.id/repository/free-roblox-accounts-with-robux-2021-that-work_GM431946152.pdfIn PDF document text
    • http://pustaka.industri.ft.unand.ac.id/repository/robux-hacks-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.industri.ft.unand.ac.id/repository/free-800-robux-gamekit_GM431946152.pdfIn PDF document text
    • http://pustaka.industri.ft.unand.ac.id/repository/free-spins-coin-master-app_GM406889139.pdfIn PDF document text
    • http://pustaka.industri.ft.unand.ac.id/repository/roblox-redeem-card-codes-free_GM431946152.pdfIn PDF document text
    • http://pustaka.industri.ft.unand.ac.id/repository/minecraft-windows-10-hacked-client_GM479516143.pdfIn PDF document text
    • http://pustaka.industri.ft.unand.ac.id/repository/how-to-cheat-in-dungeon-quest-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.industri.ft.unand.ac.id/repository/roblox-how-to-hack-in-games_GM431946152.pdfIn PDF document text
    • http://pustaka.industri.ft.unand.ac.id/repository/free-spin-coin-master-link-2021_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_off00003071.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3071 21948 bytes
SHA-256: f683f7d9f7793ecbf6da931b38c61964269a9c69ffbb101fb2c9f0cdc5dfd603
font_01_sfnt_off0000611a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x611A 19312 bytes
SHA-256: 2fc58e6e34b5e1a71d14c980e21155da553bce1e3a50e036c939353e45099324