Malicious PDF — malware analysis report

Static analysis result for SHA-256 874d803fd15d97d8…

MALICIOUS

PDF

34.4 KB Created: 2021-07-04 02:45:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 33aab8419698372978f52e9a0bf71442 SHA-1: 28ef82f87966ef9a5f0f1a485f75c1f0d8c22512 SHA-256: 874d803fd15d97d8847679378d439ac9d00cdd4ff9bbac6757e5bfc9278a253c
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs, with a high-confidence heuristic identifying a lure for a 'free generator / game hack'. The document body, though partially corrupted, also contains URLs related to game hacks and free in-game currency. This suggests the primary purpose is to trick users into visiting malicious websites, likely for credential harvesting or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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.tw/app/431946152/my-roblox-avatar-game-hack PDF link annotation
    • http://pustaka-smpn3tpi.com/repository/blue-scythe-roblox-hack_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/free-spins-on-coin-master-game_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/roblox-how-to-hack-royale-high-for-diamonds_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/roblox-free-items-in-catalog-2021_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/robux-money_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/coin-master-hacks-no-human-verification_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/how-to-get-it-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/cheating-asimo-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/free-robux-obby_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/coin-master-heaven-free-spins_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/free-robux-redeem-codes_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/roblox-how-to-change-your-username-for-free_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/how-to-get-free-robux-without-downloading-app_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/is-roblox-studio-free_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/free-robux-just-enter-username_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/roblox-hacks-discusion_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/games-on-roblox-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/how-to-run-roblox-hack-script_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/boku-no-roblox-remastered-cheat_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/coin-master-free-account_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_off00002fc1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FC1 22248 bytes
SHA-256: 0c10d4ea62e2bf8a2a66b67ccbfef9efcbb823ca911a3cfb9895da4d320b3968
font_01_sfnt_off0000613a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x613A 19080 bytes
SHA-256: 8169d8a73c365ca890cab1d906a29b59b15447ff342c47cf9f7f7fe4f88c0bcd

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