Malicious PDF — malware analysis report

Static analysis result for SHA-256 07884ab581741690…

MALICIOUS

PDF

12.2 KB
MD5: dedabc20a81795a7e3eecbbf99e1f959 SHA-1: 522b15b9fdc5fc241a8a2672ebf1692aebdb039a SHA-256: 07884ab5817416909aeccda4cdf8bcf88d148eb2cc68807acacd0a1d98e25fba
108 Risk Score

Malware Insights

MITRE ATT&CK
T1059.007 JavaScript T1566.001 Spearphishing Attachment

The PDF file contains embedded JavaScript, identified by multiple heuristics and ClamAV detection as malicious. The JavaScript is heavily obfuscated but appears to be designed to download and execute a secondary payload. The ML classifier strongly indicates maliciousness, supporting the attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • ClamAV: Pdf.Malware.Agent-7863674-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Malware.Agent-7863674-0
  • JavaScript action low PDF_JAVASCRIPT
    PDF contains a /JavaScript action. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILED
    The cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PSSyntaxError. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
javascript_obj0076_000.js
a938ff14d1617fa88acf3d240931767edb1eb6e1238c07f0136d8ff16a894fb7		 pdf-javascript-stream PDF /JS object 76 at offset 0x35A 11423 bytes

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