Malicious PDF — malware analysis report

Static analysis result for SHA-256 0eae6c679e3f614d…

MALICIOUS

PDF

79.4 KB
MD5: 7f1120cc5e5e09bd98945674a712b42b SHA-1: 1991c78efb8b5d08bc06f7e27ee038f87cbbe135 SHA-256: 0eae6c679e3f614d9a27824cac03aad2faa9fed9a44129ecad4a97e29509f4ed
108 Risk Score

Malware Insights

MITRE ATT&CK
T1059.007 JavaScript T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

The PDF contains an embedded JavaScript payload within an XFA form, a common technique for exploiting PDF vulnerabilities. The script is heavily obfuscated but appears designed to download and execute a second-stage payload. The ClamAV detection and ML classifier strongly indicate malicious intent, likely delivered via spearphishing.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • ClamAV: Pdf.Exploit.Agent-6136306-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-6136306-0
  • XFA form low PDF_XFA
    PDF uses XML Forms Architecture — can contain script logic
  • Embedded script payload in PDF stream low PDF_EMBEDDED_SCRIPT_PAYLOAD
    PDF stream bytes contain an HTML/XFA <script> tag without accompanying Windows shell-execution primitives — common in accessible XFA forms but worth surfacing for analyst review.
  • 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://ns.adobe.com/xdp/
    • http://www.xfa.org/schema/xfa-template/2.5/
    • http://www.xfa.org/schema/xfa-data/1.0/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_pdf_script_0000023c.bin
8f393643283b8633d16db50de92dac062de275a638790d063a188bf86728e9e4		 pdf-embedded-script PDF raw stream script payload at offset 0x23C 80624 bytes

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