Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ef097fcdd6009f5…

MALICIOUS

PDF

36.1 KB Created: 2021-06-19 11:24:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 7fcded9afdd345e0004063ec86fdd478 SHA-1: b8c1640d7929cd918a17fb3c2903724c09f52436 SHA-256: 0ef097fcdd6009f5ade9a0d913a35d7e556cebef405fa972c782872caf573eed
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-robux-no-human-verification-or-survey-or-download-2021-game-hack PDF link annotation
    • https://limebug.com/media/storage/editor/files/robux-scam_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/free-roblox-exploi_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/dll-aimlock-hack-roblox_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/60-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/minecraft-for-ps3-free_GM479516143.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/free-robux-easy_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/roblox-getting-hacked_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/www-bandicam-com-free-robux_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/coin-master-link-app_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/how-do-u-hack-roblox_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/how-to-get-free-robux-without-verification-2021_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/how-can-you-get-robux_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/get-free-spins-coin-master-link_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/free-minecraft-java-account_GM479516143.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/free-roblox-injector_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/what-is-coin-master-app_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/free-roblox-adopt-me-accounts_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/free-roblox-toy-code-generator_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/roblox-free-robux-website_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_off000030b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30B5 22608 bytes
SHA-256: 63ad370770cdb3c52bcb4d2754df03af5bdfb32236344c978e7dc62ec712b301
font_01_sfnt_off0000635b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x635B 20608 bytes
SHA-256: 84e083980845d6db402b7178d67bc98d29f4cdbc71d93f4e93f474fc98f39a9a

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