Malicious PDF — malware analysis report

Static analysis result for SHA-256 d983a9c2073ea221…

MALICIOUS

PDF

37.0 KB Created: 2021-05-22 04:07:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 0a188a6fc06712f55e845bb2f418998d SHA-1: a2e336eb771096b4c3d3c8e6bb2d5974ae3da0dc SHA-256: d983a9c2073ea22120af1bebeec845f1ee48ccdcb3398bf832ddb29c1492ce24
82 Risk Score

Malware Insights

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

The PDF document contains a fake CAPTCHA lure to trick users into clicking a link for a "Roblox Generator". The embedded URL and document body text point to malicious sites offering game hacks. The document's structure and content suggest it is designed to lead users to download further malicious content or visit phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9447

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/431946152/how-to-get-free-robux-codes-game-hack
    • http://stpc.it/images/real-coin-master-free-spins_GM406889139.pdf
    • http://stpc.it/images/moon-static-coin-master-generator-hacks-free_GM406889139.pdf
    • http://stpc.it/images/coin-master-pc-hack_GM406889139.pdf
    • http://stpc.it/images/free-minecraft-skin-maker_GM479516143.pdf
    • http://stpc.it/images/free-robux-codes-not-used_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00003386.bin
fca0e5c331379c9cf0d888db8656173cd20ad6f6cc776afa6851779ac24d30a2		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3386 25424 bytes
font_01_sfnt_off00006eb4.bin
647704a1f8ac96c456e26df3796ee2ada4959e42324ca69004a5f2968b1e2bf7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6EB4 18456 bytes

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