Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c425985ff01c8b2…

MALICIOUS

PDF

12.8 KB
MD5: 929124d15058fe4e46605b03d6259392 SHA-1: ad258fd6fde6cbc76ddd585a1f7387e16bd376fa SHA-256: 2c425985ff01c8b2487ad9790c953b4f644bd72715a112670644b7fba30bb35f
116 Risk Score

Malware Insights

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

The PDF contains embedded JavaScript, identified by heuristics as a 'PDF metadata JavaScript eval stager'. This stager is designed to decode and execute JavaScript, which is a common technique for downloading and executing further malicious content. The ClamAV detection 'Pdf.Exploit.Dropped-94' further confirms its malicious nature. The document body is minimal and does not provide additional context for the attack's pretext.

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
cecf178e3139ad5ad9e1630d120c7b0fc002b9a5e8aa89f0b729d610793cf369
pdf-javascript-stream PDF /JS object 76 at offset 0x3127 331 bytes