Malicious PDF — malware analysis report

Static analysis result for SHA-256 81f24c3afc59503a…

MALICIOUS

PDF

35.8 KB Created: 2021-06-19 17:40:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 8895262d25b06f999e756da4b1102d9f SHA-1: 70e733d510cc76b3814446efa47b105c2fa6434e SHA-256: 81f24c3afc59503a2c1933c41742906cc63cea64bae0a693b5d356c0f008ea6e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a clear lure for a "Roblox Hack Aimbot Download" and includes an external URI pointing to a suspicious URL. The ML classifier also flagged this PDF with high confidence. The document body and embedded URLs suggest a social engineering attempt to trick users into downloading potentially malicious software.

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/roblox-hack-aimbot-download-game-hack In PDF document text
    • https://puslitbang.kejaksaan.go.id/new/public/ckfinder/userfiles/files/coin-master-heaven-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://puslitbang.kejaksaan.go.id/new/public/ckfinder/userfiles/files/get-free-coin-master-coins_GM406889139.pdfIn PDF document text
    • https://puslitbang.kejaksaan.go.id/new/public/ckfinder/userfiles/files/how-to-get-free-robux-for-kids_GM431946152.pdfIn PDF document text
    • https://puslitbang.kejaksaan.go.id/new/public/ckfinder/userfiles/files/free-coin-master-spins-blog_GM406889139.pdfIn PDF document text
    • https://puslitbang.kejaksaan.go.id/new/public/ckfinder/userfiles/files/how-to-win-free-robux_GM431946152.pdfIn PDF document text
    • https://puslitbang.kejaksaan.go.id/new/public/ckfinder/userfiles/files/roblox-studio-free-download-for-windows_GM431946152.pdfIn PDF document text
    • https://puslitbang.kejaksaan.go.id/new/public/ckfinder/userfiles/files/ex07-v-012-hack-roblox_GM431946152.pdfIn PDF document text
    • https://puslitbang.kejaksaan.go.id/new/public/ckfinder/userfiles/files/how-do-you-get-roebucks_GM431946152.pdfIn PDF document text
    • https://puslitbang.kejaksaan.go.id/new/public/ckfinder/userfiles/files/free-roblox-passwords_GM431946152.pdfIn PDF document text
    • https://puslitbang.kejaksaan.go.id/new/public/ckfinder/userfiles/files/how-do-you-install-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://puslitbang.kejaksaan.go.id/new/public/ckfinder/userfiles/files/how-to-hack-robux_GM431946152.pdfIn PDF document text
    • https://puslitbang.kejaksaan.go.id/new/public/ckfinder/userfiles/files/free-robux-no-verification-no-survey_GM431946152.pdfIn PDF document text
    • https://puslitbang.kejaksaan.go.id/new/public/ckfinder/userfiles/files/coin-master-daily-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://puslitbang.kejaksaan.go.id/new/public/ckfinder/userfiles/files/how-to-get-free-robux-on-phone-2021_GM431946152.pdfIn PDF document text
    • https://puslitbang.kejaksaan.go.id/new/public/ckfinder/userfiles/files/links-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://puslitbang.kejaksaan.go.id/new/public/ckfinder/userfiles/files/robuxy-com-free-robux_GM431946152.pdfIn PDF document text
    • https://puslitbang.kejaksaan.go.id/new/public/ckfinder/userfiles/files/how-to-download-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://puslitbang.kejaksaan.go.id/new/public/ckfinder/userfiles/files/free-2021-robux_GM431946152.pdfIn PDF document text
    • https://puslitbang.kejaksaan.go.id/new/public/ckfinder/userfiles/files/easy-robux-today_GM431946152.pdfIn PDF document text
    • https://puslitbang.kejaksaan.go.id/new/public/ckfinder/userfiles/files/aos-hack-roblox_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_off00003300.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3300 22452 bytes
SHA-256: 617f6d92476cd85f9b2e74541cae0b35ee9f819165275e9a525284d696d33d9b
font_01_sfnt_off000064e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64E9 19648 bytes
SHA-256: 3f0833c3d6b94c55954fc0cdd02d805c2153d1ce070ec50377f5d21072c85cf0

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