Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c4ed0d4378f792e…

MALICIOUS

PDF

46.3 KB Created: 2021-05-11 01:16:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 5eb8e958e222ce3815a9309b3d48706a SHA-1: 0d30501a26d5b13862c9bf0756e1972404706917 SHA-256: 2c4ed0d4378f792e751f12735afb2d24eb5a9592b7f01dca582d80c6dde0ac41
82 Risk Score

Malware Insights

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

The document presents a fake CAPTCHA or human verification prompt, a common lure to trick users into clicking malicious links. The primary external URI, https://netcdn.xyz/app/406889139/no-human-verification-hack-for-coin-master-game-hack, is likely the destination for the payload download. The ML classifier also flagged this PDF as malicious, supporting the observed behavior.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8696

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/no-human-verification-hack-for-coin-master-game-hack
    • http://www.sfakia-online.com/images/how-to-get-minecraft-for-free-on-computer_GM479516143.pdf
    • http://www.sfakia-online.com/images/roblox-com-free-robux_GM431946152.pdf
    • http://www.sfakia-online.com/images/coin-master-support_GM406889139.pdf
    • http://www.sfakia-online.com/images/coin-master-unlimited-spin-hack-apk_GM406889139.pdf
    • http://www.sfakia-online.com/images/how-do-you-get-free-robux-without-paying_GM431946152.pdf
    • http://www.sfakia-online.com/images/hacks-para-roblox_GM431946152.pdf
    • http://www.sfakia-online.com/images/free-links-coin-master_GM406889139.pdf
    • http://www.sfakia-online.com/images/how-to-hack-people-on-roblox_GM431946152.pdf
    • http://www.sfakia-online.com/images/free-gold-cards-for-coin-master_GM406889139.pdf
    • http://www.sfakia-online.com/images/coin-master-hack-org_GM406889139.pdf
    • http://www.sfakia-online.com/images/free-robux-easy_GM431946152.pdf
    • http://www.sfakia-online.com/images/free-robux-codes-no-verification_GM431946152.pdf
    • http://www.sfakia-online.com/images/minecraft-pe-hack-client_GM479516143.pdf
    • http://www.sfakia-online.com/images/how-to-get-free-robux-2021_GM431946152.pdf
    • http://www.sfakia-online.com/images/free-spins-for-coin-master-app_GM406889139.pdf
    • http://www.sfakia-online.com/images/how-to-get-free-robux-promo-codes_GM431946152.pdf
    • http://www.sfakia-online.com/images/how-to-earn-robux-for-free-2021_GM431946152.pdf
    • http://www.sfakia-online.com/images/roblox-free-robux-codes_GM431946152.pdf
    • http://www.sfakia-online.com/images/free-money-links-coin-master_GM406889139.pdf
    • http://www.sfakia-online.com/images/minecraft-windows-10-edition-unlock-full-game-free_GM479516143.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004af9.bin
a3a82d860cf3fbfb6289e4cef42d9f680d4bb3711c9ec72ae3a58eaaf60d0c95
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AF9 26564 bytes
font_01_sfnt_off0000885d.bin
601c50867a41b9362538ff18e5f9479a0f9badf698aaf1eb7e88469c11719db7
pdf-font-stream PDF embedded font (sfnt) at offset 0x885D 2920 bytes
font_02_sfnt_off00009277.bin
e2def261e9c0d489920ca96f0bc353b112c40b7f6e818ee8e160ca61827c750c
pdf-font-stream PDF embedded font (sfnt) at offset 0x9277 18416 bytes