Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2aba46b09afafe6…

MALICIOUS

PDF

33.6 KB Created: 2021-06-21 20:53:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 38123179b98fe250628bdb2a22706fd1 SHA-1: 87c2c81e0e9b688dd630cfd0d098e73744e907ab SHA-256: b2aba46b09afafe69290f6525ef0b17ce6ce555bac25ae5db6fbc079b2478d31
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/best-roblox-hacks-game-hack PDF link annotation
    • https://limebug.com/media/storage/editor/files/how-to-hack-roblox-2021-september_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/minecraft-116-apk-download_GM479516143.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/how-to-hack-coin-master-root_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/free-robux-android_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/games-like-minecraft-but-free_GM479516143.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/admin-free-robux-codes_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/coin-master-twitter-free-spins_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/hack-coin-master-apk-mod_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/creator-hack-roblox_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/how-to-get-roblox-premium-for-free-2021_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/how-to-hack-people-easy-on-roblox-web-site_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/how-to-gett-free-robux_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/easy-way-to-get-robux_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/robux-free-ultimategamer365_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/roblox-free-online-game_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/coin-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/play-roblox-free-online_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/free-robux-and-tix-hack-no-download_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/hacks-for-robux-on-pc_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/hack-the-game-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_off00002d11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D11 22336 bytes
SHA-256: b0bef44040c02518e231ea9cdebd6c82b73524ed2dac9b897fffb9e38030c439
font_01_sfnt_off00005ee2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EE2 18760 bytes
SHA-256: e14aca0229ecc4e5c80b50bf306c735d86496ae3d09c438880efd707b555ae7f

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