Pdf.Dropper.Agent-7212863-0 — PDF malware analysis

Static analysis result for SHA-256 53dd4cb91379c1b9…

MALICIOUS

PDF

4.8 KB
MD5: 46e23afe46a7fa2673d19c5f78f1ff5e SHA-1: 664d7f4a65c21fba51fb861a8aee5e5150739553 SHA-256: 53dd4cb91379c1b93085686f8f3daaa3af34b8528d4338c23dfc8a1a039174f2
188 Risk Score

Malware Insights

Pdf.Dropper.Agent-7212863-0 · confidence 95%

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

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings including PDF_JAVASCRIPT and PDF_JS. The ML classifier strongly flags this PDF as malicious (0.996100). ClamAV detection confirms this, identifying it as Pdf.Dropper.Agent-7212863-0. The presence of a U3D content reference and the use of unescape() suggest obfuscation techniques common in PDF-based malware delivery. The embedded JavaScript file, 'javascript_obj0001_000.js', is the primary mechanism for executing the malicious payload, likely downloading and running further stages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9961

Heuristics 6

  • U3D/3D content in PDF — Adobe Reader 3D parser CVE-family indicator high CVE related PDF_U3D_CVE_RELATED
    PDF contains U3D (Universal 3D) or 3D annotation content — CVE-2011-2462 and CVE-2009-3953 are critical vulnerabilities in Adobe Reader's U3D processing that allow arbitrary code execution. U3D content in PDFs is extremely rare in normal documents.
  • ClamAV: Pdf.Dropper.Agent-7212863-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7212863-0
  • 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_obj0001_000.js
2746981c87685edfda8977ceefd9fdd3d7f0f2919428414c7be836738a46d4e4		 pdf-javascript-stream PDF /JS object 1 at offset 0xF 2954 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 5 eval/decoder/string-building token(s).

Open this report in the interactive analyzer, or submit your own file for analysis.