Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa864ae9403c9741…

MALICIOUS

PDF

35.4 KB Created: 2021-05-30 03:55:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 188e0d08af7fdb22dada0006386a0ca0 SHA-1: b2986cbedb11088947b86a6f951954b8369c4c1f SHA-256: fa864ae9403c97412571dab1d1796b6d9408a0cd08ce6090855d7a39550eb0da
82 Risk Score

Malware Insights

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

The PDF document contains a fake CAPTCHA lure, aiming to trick the user into interacting with a malicious link. The embedded URL, https://netcdn.xyz/app/835599320/tiktok-for-free-game-hack, likely serves as the initial landing page for a phishing or malware download attempt. The document's structure and heuristics suggest it's designed to exploit user interaction for malicious purposes.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9399

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-for-free-game-hack PDF link annotation
    • https://madhavbaugwellness.com/wp-content/uploads/fsqm-files/coin-master-free-spin-codes_GM406889139.pdfIn PDF document text
    • https://madhavbaugwellness.com/wp-content/uploads/fsqm-files/coin-master-daily-gift-free-spins-and-coins-link_GM406889139.pdfIn PDF document text
    • https://madhavbaugwellness.com/wp-content/uploads/fsqm-files/play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00002b6a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2B6A 28076 bytes
SHA-256: fb996bbd8b8b166250371b6d4dc4e27c3ab5ac0313643cc1e2c27ad77fda4465
font_01_sfnt_off00006bb6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BB6 17456 bytes
SHA-256: 59b82efa7141ba2b07d91e3b641cbf682cee4575ed292f5ecf89ba3b7e2e2e13

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