Pdf.Dropper.Agent-7212769-0 — PDF malware analysis

Static analysis result for SHA-256 526e3e803705e21e…

MALICIOUS

PDF

11.1 KB
MD5: b2ca47320f092500212359584b8712d5 SHA-1: bf9896a4d8082e82ecb2c65f8f58882813682f52 SHA-256: 526e3e803705e21e2230c8b05c66419447099adb6bfd90c654a3cf2aeec106e7
148 Risk Score

Malware Insights

Pdf.Dropper.Agent-7212769-0 · confidence 95%

MITRE ATT&CK
T1059.001 PowerShell

The PDF contains embedded JavaScript, indicated by multiple heuristic firings including PDF_JAVASCRIPT and PDF_JS. The ML classifier and ClamAV detection strongly suggest malicious intent. The presence of an obfuscated JavaScript file (javascript_obj0007_000.js) points to the execution of a secondary payload, likely a dropper. The unescape() function usage further supports the obfuscation and dynamic execution of malicious code.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • ClamAV: Pdf.Dropper.Agent-7212769-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7212769-0
  • unescape() call high PDF_UNESCAPE
    unescape() found — often used to decode shellcode in PDF JS exploits (matched inside decoded stream)
  • 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.
  • Suspicious extracted artifact info 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.

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
javascript_obj0007_000.js
cb521974d6a3be93bd08d68914099af8f3da52aef89677f99b07487f6d82a4aa
pdf-javascript-stream PDF /JS object 7 at offset 0x233 48099 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 270 eval/decoder/string-building token(s).