Malicious PDF — malware analysis report

Static analysis result for SHA-256 9140fc9dc6ae7ae8…

MALICIOUS

PDF

35.0 KB Created: 2021-07-01 21:43:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 8f4c1ccd559869b9db3082647dde1ec6 SHA-1: 25d031e22f215bec5bf8d20955525372b2427f0d SHA-256: 9140fc9dc6ae7ae81d3887b21829ea04754d158f816babb2fc9aa8f1de6939fe
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links and a call-to-action phrase, luring users to websites offering game hacks and free currency. The primary link, http://netcdn.co/app/406889139/i-need-more-free-spins-on-coin-master-game-hack, is associated with a game hack redirector. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest a phishing or scam attempt designed to trick users into visiting malicious sites.

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/406889139/i-need-more-free-spins-on-coin-master-game-hack PDF link annotation
    • https://limebug.com/media/storage/editor/files/how-to-hack-coin-master-using-es-file_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/earn-free-robux-fast-and-easy_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/free-robux-for-kids-no-verification_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/roblox-online-cheat-menu_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/how-to-download-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/rob-hacker-online-roblox_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/coin-master-support_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/how-to-hack-case-clicker-roblox_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/free-robux-real_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/funbloxxyz-free-robux_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/roblox-robux-2021-free_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/roblox-fun-com-free-robux_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/is-the-game-robux-hacked_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/coin-master-hack-version-2021-download_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/coin-master-villages_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/minecraft-hacked-client-18_GM479516143.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/free-robux-accounts-2021_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/roblox-hacks-hub_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/level-coin_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/cheat-for-roblox-2021_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_off00003256.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3256 23024 bytes
SHA-256: 22d5410cf74620773c012ebd99adf23184fdf094b0bdeb178a19896758f9c5c1
font_01_sfnt_off00006600.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6600 18348 bytes
SHA-256: 2261165b7ab8c5223608571b0589221b0e9296972d0056a3971024e6458eec96

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