Malicious PDF — malware analysis report

Static analysis result for SHA-256 93bcecd950207a2f…

MALICIOUS

PDF

46.5 KB Created: 2021-05-12 06:34:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: d3a37aad47c0fa047d2bb6b7b4955611 SHA-1: 5ec2a364299f331b853ec57dc0a12f7e8a569fef SHA-256: 93bcecd950207a2fd483cd5e36c0aec8bfd7a7df0413f01cb63d4e61d5928c99
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The document exhibits characteristics of a malicious PDF, including a fake CAPTCHA lure and embedded URLs. The primary URL, https://netcdn.xyz/app/406889139/2021-free-spins-coin-master-game-hack, is likely intended to host a secondary payload. The presence of multiple similar URLs suggests a campaign distributing potentially unwanted or malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

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.xyz/app/406889139/2021-free-spins-coin-master-game-hack
    • https://www.albrighteducationcentre.co.uk/admin/ckfinder/userfiles/files/kuso-icu-roblox-hack_GM431946152.pdf
    • https://www.albrighteducationcentre.co.uk/admin/ckfinder/userfiles/files/free-spins-for-coin-master-without-human-verification_GM406889139.pdf
    • https://www.albrighteducationcentre.co.uk/admin/ckfinder/userfiles/files/coin-master-free-spins-promo-code_GM406889139.pdf
    • https://www.albrighteducationcentre.co.uk/admin/ckfinder/userfiles/files/coin-master-free-spin-2912-2021_GM406889139.pdf
    • https://www.albrighteducationcentre.co.uk/admin/ckfinder/userfiles/files/minecraft-hack-app_GM479516143.pdf
    • https://www.albrighteducationcentre.co.uk/admin/ckfinder/userfiles/files/rbl-gg-free-robux_GM431946152.pdf
    • https://www.albrighteducationcentre.co.uk/admin/ckfinder/userfiles/files/play-minecraft-for-free_GM479516143.pdf
    • https://www.albrighteducationcentre.co.uk/admin/ckfinder/userfiles/files/how-to-get-minecraft-for-free-on-xbox-one_GM479516143.pdf
    • https://www.albrighteducationcentre.co.uk/admin/ckfinder/userfiles/files/how-do-i-get-free-robux-on-roblox_GM431946152.pdf
    • https://www.albrighteducationcentre.co.uk/admin/ckfinder/userfiles/files/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdf
    • https://www.albrighteducationcentre.co.uk/admin/ckfinder/userfiles/files/coin-master-hack-app-android_GM406889139.pdf
    • https://www.albrighteducationcentre.co.uk/admin/ckfinder/userfiles/files/haktuts-coin-master-free-spin-link_GM406889139.pdf
    • https://www.albrighteducationcentre.co.uk/admin/ckfinder/userfiles/files/roblox-how-to-get-free-clothes_GM431946152.pdf
    • https://www.albrighteducationcentre.co.uk/admin/ckfinder/userfiles/files/coin-master-cheats-2021_GM406889139.pdf
    • https://www.albrighteducationcentre.co.uk/admin/ckfinder/userfiles/files/free-outfits-roblox_GM431946152.pdf
    • https://www.albrighteducationcentre.co.uk/admin/ckfinder/userfiles/files/free-roblox-hack_GM431946152.pdf
    • https://www.albrighteducationcentre.co.uk/admin/ckfinder/userfiles/files/haktuts-coin-master-free-spins-2021_GM406889139.pdf
    • https://www.albrighteducationcentre.co.uk/admin/ckfinder/userfiles/files/coin-master-hack-activegamer_GM406889139.pdf
    • https://www.albrighteducationcentre.co.uk/admin/ckfinder/userfiles/files/haktuts-coin-master-free-daily-spins_GM406889139.pdf
    • https://www.albrighteducationcentre.co.uk/admin/ckfinder/userfiles/files/coin-master-free-spins-for-today_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004f9d.bin
28b13295b2b12a4f7c7cd1533f04392207e9087046a703f6b4e9b1b37fae68f9		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4F9D 31836 bytes
font_01_sfnt_off00009399.bin
d5a46c40ddaffffdec7b194e78d64597afed9f46b5e12e45e50a00bb771aa4a6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9399 18288 bytes

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