Malicious PDF — malware analysis report

Static analysis result for SHA-256 febc87ecfe828a1e…

MALICIOUS

PDF

40.2 KB Created: 2021-05-20 13:31:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 24001ed581e4f6ca01515a0da52705c8 SHA-1: 90c432571b4a4fb78d69d3ff8650741aad075dac SHA-256: febc87ecfe828a1e87f1d8e2fecd6c4f7816df16579a3aecc5818d4541bed26b
82 Risk Score

Malware Insights

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

The PDF document displays a fake CAPTCHA and a call-to-action button to trick the user into downloading a file, masquerading as a Minecraft Pocket Edition hack. It contains multiple embedded URLs pointing to potentially malicious download sites, including one that is directly referenced in the document body. The ML classifier also flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9476

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/479516143/minecraft-pocket-edition-download-free-pe-calculator-game-hack
    • http://interpretation-dessins-enfants.net/images/coin-master-hack-2021_GM406889139.pdf
    • http://interpretation-dessins-enfants.net/images/mcpe-hack-client_GM479516143.pdf
    • http://interpretation-dessins-enfants.net/images/blogger-coin-master-free-spins_GM406889139.pdf
    • http://interpretation-dessins-enfants.net/images/2021-coin-master-hack-without-verification_GM406889139.pdf
    • http://interpretation-dessins-enfants.net/images/coin-master-hack-apk-download_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off000037a2.bin
35b7ce4a563d0bc31380600721e9da6aa09c32d206ee46554266d8176c07c440		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x37A2 30352 bytes
font_01_sfnt_off00007ae7.bin
8668002c62b81273482b61da1613b994afc8b764b14ec7b2ef260aeb97363f7c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7AE7 18752 bytes

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