Malicious PDF — malware analysis report

Static analysis result for SHA-256 ecff10e841116dc1…

MALICIOUS

PDF

12.0 KB
MD5: 900bb35c9255824d4e592bc28918910d SHA-1: 0f6d49dca7853fa2addc628e4d0fbc0e2c72dda8 SHA-256: ecff10e841116dc12b0cbdbacf8a67b97acf6e627385436e5b56806bc186a25b
116 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File: User Execution: Malicious File

The PDF file contains embedded JavaScript, identified by multiple heuristics including a 'PDF_METADATA_EVAL_STAGER'. This JavaScript is likely responsible for executing an exploit, as indicated by the 'unknown_exploit_score' and the ClamAV detection name 'Pdf.Exploit.Dropped-94'. The primary function of the script appears to be downloading and executing a secondary payload.

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
0eb89706d18027771a085d5758bf9fdce048800339a1b6bb15f7ed7ae1c719f5
pdf-javascript-stream PDF /JS object 76 at offset 0x2DCE 331 bytes