Malicious PDF — malware analysis report

Static analysis result for SHA-256 5544407809eb8b8a…

MALICIOUS

PDF

114.8 KB
MD5: 63f7e61a20a0077407661df0438527cc SHA-1: 4b6e846da8901fc7e4ef5c5f6098b52e5509b217 SHA-256: 5544407809eb8b8a24ff25bc16a6167e26b0d0a0b2cf84f54c10c19f04f34753
188 Risk Score

Malware Insights

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

The file is a PDF containing XFA (XML Forms Architecture) which is known to be a vector for exploits. Heuristics indicate the presence of heap spray exploit code and embedded JavaScript within an XFA form. This script is likely designed to download and execute a second-stage payload. The ClamAV detection 'Pdf.Exploit.Agent-6136306-0' further confirms its malicious nature.

Heuristics 6

  • XFA form contains risky executable script high CVE related PDF_XFA_SCRIPT
    PDF embeds an XFA form whose script block contains exploit, submission/launch, or shell-execution primitives. Ordinary LiveCycle print/update scripts are left as generic XFA/JS signals unless stronger behavior is present.
  • XFA JavaScript heap-spray exploit code critical PDF_XFA_HEAP_SPRAY
    PDF contains XFA script content with heap-spray or shellcode-like JavaScript markers such as large encoded word sequences, util.pack, large arrays, or spray variable names. This is a weaponised Adobe Reader exploit pattern, not a normal interactive form.
  • ClamAV: Pdf.Exploit.Agent-6136306-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-6136306-0
  • 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/
    • http://www.xfa.org/schema/xfa-data/1.0/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_pdf_script_0000023c.bin
d39e0f0c713a19d955620ed47d0fc4fe18f3ef597a9cd2aecca7d9eaf12f22dc		 pdf-embedded-script PDF raw stream script payload at offset 0x23C 116824 bytes

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