Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3e2469edb10f28a…

MALICIOUS

PDF

34.7 KB Created: 2021-07-01 21:58:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 92e40f214d09d17f16fce654ced6b493 SHA-1: 6255afa85b46b7ac61a622a0b35aa06086e91091 SHA-256: c3e2469edb10f28a08cfdeea91893d3da753d91111fa239073d9d641962a9593
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/431946152/free-roblox-accounts-that-work-game-hack PDF link annotation
    • https://limebug.com/media/storage/editor/files/b-tools-hack-roblox_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/how-to-get-free-unlimited-robux_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/kazok-roblox-free-robux_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/robux-offers-free_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/roblox-games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/coin-master-free-spins-app_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/roblox-buddy-me-free-robux_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/free-commands-for-roblox-without-admin_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/coin-master-daily-free-spin-and-coin-link-haktuts_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/free-links-coin-master_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/how-ro-hack-roblox-account_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/cute-free-hair-on-roblox_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/robloxbuddy-me-free-robux_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/master-coin-free-spin_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/coin-master-hack-using-lucky-patcher_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/free-robux-no-human-verification-or-survey-or-download-2021_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/fake-robux-codes_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/free-robux-please_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/minecraft-gun-mod-download-free_GM479516143.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/admin-free-robux-codes_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_off00002ff0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FF0 22388 bytes
SHA-256: 6461b46c65e1c1d621ccfcdebcb80b62e8c038cd3faa4d05b0ad1ea579b01da0
font_01_sfnt_off00006178.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6178 19428 bytes
SHA-256: 6c1a5b624a84b2f7bc9c206b3657e31878d9065c8b01b8732ae124258ddd6011

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