Malicious PDF — malware analysis report

Static analysis result for SHA-256 16d178c6abcab804…

MALICIOUS

PDF

234.8 KB Created: 2021-04-04 19:48:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 500702e94250759eb8802e435c0a0a2e SHA-1: 6715180337dd29c853a0c22f9a4d807a6aec8903 SHA-256: 16d178c6abcab804f3e4bb1ff1ae255f8c82013944a5943d432de1937326dbf1
72 Risk Score

Malware Insights

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

The file is identified as malicious by ClamAV with a specific phishing signature related to Roblox. It contains an embedded URI pointing to a download page for 'Roblox Login Free Download', and a heuristic indicates a visual download button lure. The document body, though heavily obfuscated, contains metadata suggesting it was generated by wkhtmltopdf, a tool often used to create PDFs from web content, potentially to disguise malicious links or content.

Machine Learning

  • Nyx PDF Classifier clean score 0.0491

Heuristics 4

  • ClamAV: Pdf.Phishing.Roblox062100-9873116-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Roblox062100-9873116-0
  • 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 http://gaminggenerator.org/app/431946152/roblox-login-free-download
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000355eb.bin
22580727e62650bd1997b64bb5022d923dc3bf32a5580d61b41655de0d8930af		 pdf-font-stream PDF embedded font (sfnt) at offset 0x355EB 22264 bytes
font_01_sfnt_off00038619.bin
60170721b9c1946dd82bc596dfdaee4ef38dcf20c6304899a9482cf75c268d01		 pdf-font-stream PDF embedded font (sfnt) at offset 0x38619 18484 bytes

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