Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d6c0baab4bf49b4…

MALICIOUS

PDF

37.2 KB Created: 2021-05-22 09:19:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 5983dd96246a0bd6e6575795d52ed4d7 SHA-1: ccc6e2ba889189825683ced9d782e451a1c0e101 SHA-256: 0d6c0baab4bf49b464515b669ceb66bdab06d9dc239f3e8d7e39dee2aefabd27
82 Risk Score

Malware Insights

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

The PDF document contains a fake CAPTCHA lure, which is a common social engineering tactic to trick users into performing an action. It also embeds multiple URLs, one of which is directly related to the lure text 'Coin Master Free Coins And Spins App'. The presence of these elements strongly suggests an attempt to redirect the user to a malicious site or initiate a download.

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/406889139/coin-master-free-coins-and-spins-app-game-hack
    • https://elma.mtsn10jakarta.sch.id/__statics/gudangsoal/files/minecraft-windows-10-free-code_GM479516143.pdf
    • https://elma.mtsn10jakarta.sch.id/__statics/gudangsoal/files/free-roblox-executor-no-key_GM431946152.pdf
    • https://elma.mtsn10jakarta.sch.id/__statics/gudangsoal/files/free-spins-for-coin-master_GM406889139.pdf
    • https://elma.mtsn10jakarta.sch.id/__statics/gudangsoal/files/try-minecraft-free_GM479516143.pdf
    • https://elma.mtsn10jakarta.sch.id/__statics/gudangsoal/files/earn-robux-com_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off000034ca.bin
f25b77296a1dc3d8d992e7d3155f4b6e3423ba85aad1acd9ae744179f796b4bf		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x34CA 26240 bytes
font_01_sfnt_off000070d3.bin
f77ee24e01944806ea28e16fd73427a54f7109e241804df06ce657d8c6d11cfb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70D3 18060 bytes

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