Malicious PDF — malware analysis report

Static analysis result for SHA-256 486719f1b7d6ccac…

MALICIOUS

PDF

35.7 KB Created: 2021-06-22 01:33:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: f684b7590be59c1a7ac90cfd4bfc7fbd SHA-1: f8847eb3ce9001bb92a3d5ddaf6576b24594bc91 SHA-256: 486719f1b7d6ccacdf02ca49b322f33e8256896ef02102f462be44da6dcf3b77
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains multiple links and a call-to-action phrase, directing users to websites that offer game hacks and free in-game currency. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' strongly indicates a social engineering tactic to trick users into visiting potentially malicious sites. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to exploit user interest in free game-related content, likely leading to a download or further redirection.

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.co/app/431946152/free-uc-on-roblox-game-hack PDF link annotation
    • https://limebug.com/media/storage/editor/files/minecraft-world-free-download_GM479516143.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/how-to-get-minecraft-windows-10-edition-for-free_GM479516143.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/coin-master-free-spin-link-today-2021_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/master-hack-coin_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/minecraft-for-free-on-phone_GM479516143.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/hack-de-juegos-apk-robux_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/coin-master-free-spins-coins_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/coin-master-hack-ios-apk_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/how-to-hack-coin-master-without-root_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/free-roblox-exploi_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/roblox-free-executor_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/windows-10-minecraft-hacks_GM479516143.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/free-robux-glitch-2021-working_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/free-roblox-accounts-that-work_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/cell-can-we-get-free-robux-dbz_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/coin-master-ad_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/roblox-game-hacks-2021_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/roblox-hack-generator_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_off00003277.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3277 23496 bytes
SHA-256: 91d28fe5f40aac7ab8d64f30e08bd35da8107818ea1f875a002974876baebc75
font_01_sfnt_off000067b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67B4 18652 bytes
SHA-256: d3a1ab33d9905879b4f8a44759e69154af3506a36ce15b1d0a019156c345cb15

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