Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd1e1e6d08f0c2d0…

MALICIOUS

PDF

34.0 KB Created: 2021-06-19 12:12:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: bb2e053837527c1786cd6eb9d32ced67 SHA-1: da23995c3fcb9381404dfd18f0284d3d54e6d720 SHA-256: dd1e1e6d08f0c2d063c4a482d0fe730fff3840498df43ba687cfa51333159c70
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/get-a-free-dominus-roblox-game-hack PDF link annotation
    • https://limebug.com/media/storage/editor/files/free-roblox-promo-codes-for-robux_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/watch-ads-for-robux_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/huskybuscom-free-robux_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/earn-free-robux-for-roblox_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/roblox-donloaden-free_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/anti-hacking-roblox-names_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/free-minecraft-pe-server_GM479516143.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/coin-master-firebird-card-free_GM406889139.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/coin-master-hack-apk_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/if-you-delete-minecraft-can-you-redownload-it-for-free_GM479516143.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/roblox-pink-free-robux_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/hack-coin-master-game-apk_GM406889139.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-get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/coin-master-free-spins-and-coins-hack_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/coin-master-mod-apk-unlimited-spin-download-free-full-version_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/how-to-get-unlimited-robux_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/worst-roblox-avatars_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/60-free-spins-coin-master_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_off00002dfe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DFE 22156 bytes
SHA-256: 5f50fd1b02674937b1ff231d31806cee6c63da03a50092ca4ca88b5af9a49e36
font_01_sfnt_off00005f55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F55 19256 bytes
SHA-256: 38ec51429dec637fd3b693741384401f8ebef67976be73410f56d8d6a7d86699

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