Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf6079b563fecb04…

MALICIOUS

PDF

34.3 KB Created: 2021-06-22 03:51:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 9bff102a83b299fd6092dedef40159f6 SHA-1: baa466759ba3e310a6f13bd048c92246c60b1a7e SHA-256: bf6079b563fecb04ebd599b803910a218f390b11fb8a3290ddb035155da08f72
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

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/coin-master-free-spins-and-coins-hack-game-hack PDF link annotation
    • https://limebug.com/media/storage/editor/files/hack-all-guns-phantom-forces-roblox_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/coins-master_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/get-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/coin-master-hack-coins_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/master-coin-hack-game_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/best-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/free-face-roblox-catalog_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/coin-master-free-spins-2021-link_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/how-to-get-roblox-premium-for-free_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/get-free-coin-master-coins_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/earn-free-robux-today_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/is-there-an-actual-hack-that-work-for-coin-master_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/roblox-piano-hack-script-pastebin_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/win-free-robux_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/50-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/free-robux-game-no-password_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/how-do-you-change-your-name-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/www-roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/coin-master-hack-without-human-verification-2021_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/free-tiktok-coins_GM835599320.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_off000031b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31B3 22252 bytes
SHA-256: b31cfb4172c83b8d5513e5da64ef62983cc5be69219df5b4f9d38d278a59623a
font_01_sfnt_off000062cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62CF 18520 bytes
SHA-256: c1559f7590648362f5cfdfce4209be73d9760d02d3452c31977188917b8b5890

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