Malicious PDF — malware analysis report

Static analysis result for SHA-256 5657c2553e0aa933…

MALICIOUS

PDF

53.0 KB
MD5: 59681fc503e5bcb5cb71c48ca425021a SHA-1: f160cbc267623b69eb8848e08f351bb7137a5fe8 SHA-256: 5657c2553e0aa93322561196598e1e0acfc992fe60ed99b1140971974a1801bc
148 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File: User Execution: Malicious Attachment T1566.002 Phishing: Spearphishing Attachment T1059.001 Command and Scripting Interpreter: PowerShell

The critical ClamAV detections indicate this PDF is malicious, specifically identified as 'Pdf.Exploit.Agent-6136306-0'. The presence of an embedded script payload within a PDF stream, coupled with the XFA form heuristic, suggests an exploit targeting PDF reader vulnerabilities. The embedded script is likely responsible for downloading and executing a second-stage payload.

Heuristics 5

  • ClamAV: Pdf.Exploit.Agent-6136306-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-6136306-0
  • ClamAV detection on extracted artifact critical EXTRACTED_FILE_CLAMAV
    ClamAV flagged at least one file extracted from inside this sample. Even when the wrapping document carries no AV detection of its own, a hit on the carved artifact is a strong indicator the sample is a delivery vehicle.
  • Embedded script payload in PDF stream medium PDF_EMBEDDED_SCRIPT_PAYLOAD
    PDF stream bytes contain an HTML/XFA <script> tag without accompanying Windows shell-execution primitives — common in accessible XFA forms but worth surfacing for analyst review.
  • XFA form low PDF_XFA
    PDF uses XML Forms Architecture — can contain script logic
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://ns.adobe.com/xdp/
    • http://www.xfa.org/schema/xfa-template/2.5/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_pdf_script_0000023e.bin
aab9a1b43d1f35a042daf527b4965a7fcb9385450618f81b3e82045c348ebbf4		 pdf-embedded-script PDF decompressed stream script payload at offset 0x23E 54252 bytes
Detection
ClamAV: Pdf.Exploit.Agent-6136306-0
Obfuscation or payload: unlikely

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