Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe5933ede51d1697…

MALICIOUS

PDF

34.2 KB Created: 2021-06-25 09:20:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: dd1ddc576c36f871951cbfff4bb7600c SHA-1: aecd0478498197142564f94f1c90146db2a5fb7f SHA-256: fe5933ede51d1697efe548aa0980be4455206f48c7e90332a3e94c31f8010c85
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/479516143/windows-10-minecraft-hacks-game-hack PDF link annotation
    • https://limebug.com/media/storage/editor/files/how-to-get-free-robux-without-download-apps-or-survey_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/microsoft-roblox_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/bloxland-earn-free-robux_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/roblox-cheat-robux_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/free-google-play-promo-codes-coin-master_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/coin-master-free-spin-codes_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/free-roblox-clothes-templates_GM431946152.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/free-coin-master-spin-daily-link_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/how-to-hack-roblox_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/roblox-codes-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/how-to-get-free-hair-on-roblox_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/minecraft-for-chromebook-free_GM479516143.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/coin-master-hacked-apk-download-for-android_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/coin-master-free_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/roblox-free-danlod_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/free-robux-scam_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/coin-master-daily-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/pubg-uc-generator-2021_GM1330123889.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_off00003152.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3152 21608 bytes
SHA-256: ab4179ba3b254af1015c474dcba5ab2d55597446e8ad422c21d5a178c5626d43
font_01_sfnt_off000060ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60AC 18980 bytes
SHA-256: 03214c18f960a48cbd31d6f5bef257b62caa9c5e4674619e4c22a7c51e90e08f

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