Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad0ed13433b0519b…

MALICIOUS

PDF

45.4 KB Created: 2021-06-03 08:11:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: eb28f346a7e35a4e091b474ac9cd08c2 SHA-1: 439d63d106f2e6ffd75a840e88ddfe02e1987afc SHA-256: ad0ed13433b0519b6927f55a1c56d6f540106f6e7ee54890ff270240d76d3e25
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The document displays a fake CAPTCHA to trick users into clicking a link for 'More Robux', which is a common social engineering tactic. The embedded URL points to a resource that likely serves a malicious payload. No scripts were extracted from this sample, limiting the ability to determine specific execution methods.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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.online/app/431946152/get-more-robux-game-hack PDF link annotation
    • http://proyetec.com.co/aym_image/files/free-coin-master-androd-cheats-2021_GM406889139.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/free-spin-and-coin-blogspot-com_GM406889139.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/how-to-get-minecraft-windows-10-for-free-2021_GM479516143.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/coin-master-unlimited-spin-hack_GM406889139.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/free-robux-websites-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/coin-master-hack-mod-apk-2021_GM406889139.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/100-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/how-to-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/coin-master-free-spins-link-2021-download_GM406889139.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/coin-master-apk-free-download_GM406889139.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/free-robux-games-on-roblox-that-work-2021_GM431946152.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/minecraft-apk-download-v1-144-2-free_GM479516143.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/wurst-client_GM479516143.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/2021-coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/minecraft-windows-10-hacked-client_GM479516143.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/coin-master-gold-cards-free_GM406889139.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/free-robux_GM431946152.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/coin-master-hack-programmers_GM406889139.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/haktuts-coin-master-free-spins_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
stream_004_off000051fc.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x51FC 25980 bytes
SHA-256: 167f7f0e69937acec795b060cade1c9a5d8dd85177fedfde4f962e51f09fc284
font_01_sfnt_off00008f1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F1B 18152 bytes
SHA-256: 3f0afb5031a6524980f5b4f14d61315d560e84a079a8a334c40e6e2be07f7597

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