Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd767cec39009d3b…

MALICIOUS

PDF

35.5 KB Created: 2021-06-28 17:37:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-18
MD5: 065d88e062e61f7f0e30c28a1f4c54ba SHA-1: 36d0d1d5467f80d2c34237e4562c67076d7013d3 SHA-256: cd767cec39009d3b494710d52b30602112fc36dc31a0cc208b60989303dd37ab
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/hack-roblox-pc-download-game-hack In PDF document text
    • https://opac.itp.ac.id/repository/daily-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/how-to-get-free-roebucks-on-roblox_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/assassin-2-roblox-hack-khnif_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/adopt-and-raise-a-cute-kid-hack-script-roblox_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/free-roblox-groups-with-funds_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/how-to-get-100-robux-for-free_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/roblox-free-bag-goku_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/pokemon-go-free-event-box-april-2021_GM1094591345.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/free-robux-clothes_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/roblox-race-track-free_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/krnl-roblox_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/free-giftcards-de-roblox_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/auto-clicker-for-roblox-mac-2021-free_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/roblox-deadzone-remade-hack_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/roblox-jailbreak-admin-hack_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/hack-viexploid-madcity-roblox_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/coin-master-cards-hack_GM406889139.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/coin-master-download_GM406889139.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/coin-master-daily-free-spins-link-today-twitter_GM406889139.pdfIn PDF document text
    • https://www.roblox.com/my/tasksIn PDF document text
    • https://www.roblox.com/.IIn 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_off000032c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32C1 22452 bytes
SHA-256: 10047be57a5254b59cfb4bf22a8631ecfc536e5ea54348b2884a9a3947e67818
font_01_sfnt_off000064a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64A1 19316 bytes
SHA-256: 266c175c012e00bc010aa3a00a5549e40e51940dcb9769d4f248c098d902e5af

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