Malicious PDF — malware analysis report

Static analysis result for SHA-256 09d762bdd837cf62…

MALICIOUS

PDF

44.7 KB Created: 2021-06-08 14:00:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 8f2c4ad11410782dc3321ddb3e10f732 SHA-1: d1b91d3fc325215bcd3b1c4f869ff63460d59294 SHA-256: 09d762bdd837cf6269c1ec7319364cf58f674ef687bc2afb046de1e5491bb951
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The document presents a fake CAPTCHA or human verification prompt to trick the user into interacting with it. It contains an embedded URI pointing to a URL that likely hosts a malicious payload. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

Heuristics 4

  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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 https://netcdn.tw/app/431946152/free-robux-sans-hack-game-hack
    • http://collectionsuncovered.com/media/storage/editor/files/hack-my-spins-coin-master_GM406889139.pdf
    • http://collectionsuncovered.com/media/storage/editor/files/promo-codes-for-free-robux_GM431946152.pdf
    • http://collectionsuncovered.com/media/storage/editor/files/coin-master-cards_GM406889139.pdf
    • http://collectionsuncovered.com/media/storage/editor/files/free-robux-hack-2021_GM431946152.pdf
    • http://collectionsuncovered.com/media/storage/editor/files/google-roblox-games_GM431946152.pdf
    • http://collectionsuncovered.com/media/storage/editor/files/minecraft-for-macbook-free_GM479516143.pdf
    • http://collectionsuncovered.com/media/storage/editor/files/how-to-get-free-robux-easy-2021_GM431946152.pdf
    • http://collectionsuncovered.com/media/storage/editor/files/minecraft-book-collection_GM479516143.pdf
    • http://collectionsuncovered.com/media/storage/editor/files/how-to-get-free-robux-by-playing-games_GM431946152.pdf
    • http://collectionsuncovered.com/media/storage/editor/files/minecraft-free-download-chromebook_GM479516143.pdf
    • http://collectionsuncovered.com/media/storage/editor/files/scaffold-minecraft-hack_GM479516143.pdf
    • http://collectionsuncovered.com/media/storage/editor/files/minecraft-tower-defense-2-hacked_GM479516143.pdf
    • http://collectionsuncovered.com/media/storage/editor/files/free-appsfor-coin-master-daily-rewards_GM406889139.pdf
    • http://collectionsuncovered.com/media/storage/editor/files/get-free-tiktok-followers_GM835599320.pdf
    • http://collectionsuncovered.com/media/storage/editor/files/archery-master-3d-apk-and-mod-free-download-unlimited-coins_GM406889139.pdf
    • http://collectionsuncovered.com/media/storage/editor/files/coin-master-free-spins-hack-apk-download_GM406889139.pdf
    • http://collectionsuncovered.com/media/storage/editor/files/robloxfun-com-robux_GM431946152.pdf
    • http://collectionsuncovered.com/media/storage/editor/files/how-to-get-a-free-dominus-in-roblox_GM431946152.pdf
    • http://collectionsuncovered.com/media/storage/editor/files/tiktok-for-free_GM835599320.pdf
    • http://collectionsuncovered.com/media/storage/editor/files/how-to-get-free-robux-fast_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005166.bin
0e6d744adf64ee18f11fadcd3a86dfd648fb6d38d38f67603712ed56a25a79b9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5166 25824 bytes
font_01_sfnt_off00008c03.bin
d1752da470938a12be820bd8a2a2ed8d3e9a18c1d4a6e6633456c65b9e780772		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8C03 18412 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.