Malicious PDF — malware analysis report

Static analysis result for SHA-256 d94e65e299defd42…

MALICIOUS

PDF

39.6 KB Created: 2021-05-23 23:47:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: ce678dfcf9940d6009cea9bbb6549848 SHA-1: 7d83f590b698c1a1651737b56886953477da8241 SHA-256: d94e65e299defd42fe8e26d338181b3e4d8e6be87f5617c4424158a72c1dc1db
82 Risk Score

Malware Insights

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

The document displays a fake CAPTCHA, a common lure to trick users into interacting with malicious content. It contains multiple embedded URLs, one of which, 'https://netcdn.xyz/app/406889139/coin-master-free-spin-and-coins-links-game-hack', is likely intended to lead to a payload download. The presence of PDF_URI and ML_NYX_PDF_MALICIOUS heuristics further supports the malicious nature of this document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8060

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/coin-master-free-spin-and-coins-links-game-hack
    • http://demenagementlandry.com/images/how-to-download-minecraft-for-free-on-windows-10_GM479516143.pdf
    • http://demenagementlandry.com/images/hack-coin-master-android_GM406889139.pdf
    • http://demenagementlandry.com/images/coin-master-free-spins-promo-code_GM406889139.pdf
    • http://demenagementlandry.com/images/pokemon-go-freezing_GM1094591345.pdf
    • http://demenagementlandry.com/images/free-spins-coin-master-2021_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00003415.bin
d1a366fe3f4569bccd34024861d083951919a5372e5a324fd2d13058f9fb7316		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3415 25220 bytes
font_01_sfnt_off00006e7b.bin
4b3e0f36ad1e0c7e3ea5c178fd2b4f097d1e01575fc6a4101a8b520db34dfe07		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E7B 3400 bytes
font_02_sfnt_off000079a4.bin
ab1c4cdc214a6baf81a15e2f62a40ea9cfbbbf407f0f3dd1c7564e467cf0dae2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x79A4 18228 bytes

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