Malicious PDF — malware analysis report

Static analysis result for SHA-256 e52200c530db07ff…

MALICIOUS

PDF

2.7 KB Created: 5874-01-01 Authoring application: 2531
MD5: e48d1960609076f691fcb06a046ed4f3 SHA-1: 036d76073eac29a973c2b665cead2f653df108d4 SHA-256: e52200c530db07ffd12f6c8dcd49740426a72905f753a2f6de3d4fb78a10f223
126 Risk Score

Malware Insights

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

The PDF was flagged as malicious by ML classifiers and ClamAV with a critical detection score. Static analysis revealed embedded JavaScript, which is often used to exploit PDF vulnerabilities and download further payloads. The presence of obfuscated JavaScript in the embedded artifact 'javascript_obj0013_001.js' strongly suggests an attempt to conceal malicious code execution, likely leading to the download and execution of a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • ClamAV: Pdf.Exploit.Agent-36014 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-36014
  • Suspicious extracted artifact medium EXTRACTED_FILE_STATIC_TRIAGE
    One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
  • 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_obj0013_001.js
5eede714364474b0ce16fee0eac8ff268b286e40136804d7f2ddfbd1ad8c5903
pdf-javascript-stream PDF /JS object 13 at offset 0x328 4789 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 10 eval/decoder/string-building token(s). Carved artifact contains 3 long hex-escaped blob(s).