Malicious PDF — malware analysis report

Static analysis result for SHA-256 bab0a2e812ad16b3…

MALICIOUS

PDF

12.3 KB
MD5: 9ee39fb7838e3591ab16ed035e033335 SHA-1: dd0b40460116567decfab1846234c9f3087d9193 SHA-256: bab0a2e812ad16b314927f83bc95805a8082fdbfbed15da9585689f24232b238
146 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript, flagged by multiple heuristics as a stager for executing malicious code. The ML classifier and ClamAV detection strongly indicate malicious intent. The embedded JavaScript is likely responsible for downloading and executing a secondary payload, as suggested by the 'Pdf.Exploit.Dropped-94' ClamAV signature.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • ClamAV: Pdf.Exploit.Dropped-94 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Dropped-94
  • PDF metadata JavaScript eval stager high PDF_METADATA_EVAL_STAGER
    PDF JavaScript reads document metadata fields such as title, subject, or producer, decodes character data with parseInt/String.fromCharCode style helpers, and evals the recovered stage. This is a high-signal exploit-kit staging pattern.
  • 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.

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
javascript_obj0076_000.js
4de33e351a386c34b43a50225fbde472d81737a79333adf568b2991dc2ffbab7
pdf-javascript-stream PDF /JS object 76 at offset 0x2F1E 331 bytes