PDF static analysis report

Static analysis result for SHA-256 4f8b5d6576b29697…

SUSPICIOUS

PDF

35.6 KB Created: 2021-05-24 04:37:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: f5f8fd77eadb627e53abfb13bd3ff2eb SHA-1: 5513faa0ac572e33de973c91ad0c0592a4887805 SHA-256: 4f8b5d6576b29697ae54851e97ea10761e058b8b27a6e13229f532c981b35b27
52 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document displays a fake CAPTCHA and a call-to-action to trick users into clicking a link. The embedded URL, https://netcdn.xyz/app/835599320/tiktok-likes-free-game-hack, is likely the destination for this lure. While no scripts were directly extracted, the PDF structure and heuristics suggest an attempt to exploit user interaction for malicious redirection, consistent with a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier clean score 0.0078

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/835599320/tiktok-likes-free-game-hack PDF link annotation
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00002a1b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A1B 24444 bytes
SHA-256: abb9d33336224e1557a53a81d4ef86d7905e7d7c0f0e9f1fed20e55aa26a75c6
font_01_sfnt_off00006244.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6244 2896 bytes
SHA-256: c1a618813a64314343402b2ec738fc11c4c912460a4c7ae3029924d2f9a229cd
font_02_sfnt_off00006c29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C29 17456 bytes
SHA-256: 6bc07a916d4e04dd857b15fc22f6a85a1633f574b63a4730ea8dc15634c660b5