Malicious PDF — malware analysis report

Static analysis result for SHA-256 15dce63cc955a009…

MALICIOUS

PDF

37.2 KB Created: 2021-05-22 18:09:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: d09dc84edd53f352a4c2fffb6a7f2832 SHA-1: 6c977e970a258bb41f1c06a4e898c0f9798e4b00 SHA-256: 15dce63cc955a0096105904f50c09ac95a54de762f745f9672c235539a6aab75
82 Risk Score

Malware Insights

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

The PDF document contains a fake CAPTCHA and a call-to-action button, aiming to trick the user into clicking a link. The embedded URL, https://netcdn.xyz/app/431946152/free-robux-scams-game-hack, likely leads to a malicious site or a further stage of the attack. The document's content and heuristics suggest a phishing or scam attempt, likely delivered as a spearphishing attachment.

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/free-robux-scams-game-hack
    • http://elearning.manmabar.sch.id/__statics/gudangsoal/files/roblox-piano-hack_GM431946152.pdf
    • http://elearning.manmabar.sch.id/__statics/gudangsoal/files/free-roblox-hair-to-wear_GM431946152.pdf
    • http://elearning.manmabar.sch.id/__statics/gudangsoal/files/coin-master-hack-https-coinms-net_GM406889139.pdf
    • http://elearning.manmabar.sch.id/__statics/gudangsoal/files/coin-master-hack-unlimited-spins-apk-download_GM406889139.pdf
    • http://elearning.manmabar.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-inspect_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003487.bin
0d7cee1ddb8b304af723d32b94f01dbbaf79bfb14e6a8f3f81e42a0dc707a3cf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3487 25656 bytes
font_01_sfnt_off00006f72.bin
f6eebadb3de4af7ab0205057cc55fc1daf9397692da1370c2a19d2d749ad11f1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F72 18500 bytes

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