Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e6f8917c023264c…

MALICIOUS

PDF

111.3 KB
MD5: fe688946dc95334476dafb7e4a9bd058 SHA-1: 98d955f8258c0e61bf99d5dcb6146cb8b4281020 SHA-256: 2e6f8917c023264c31040899d9bc2d8363a2e05167de2f63232eecda1b0e0f4c
208 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1059.001 PowerShell

This PDF file exploits the CVE-2010-0188 vulnerability, leveraging XFA forms to deliver a malicious payload. The embedded artifact, detected by ClamAV as Js.Exploit.HTML-27, indicates the execution of JavaScript, likely to download and execute a second-stage payload. The presence of XFA and the specific CVE strongly suggest an exploit-based attack.

Heuristics 6

  • Adobe Reader LibTIFF XFA image exploit — CVE-2010-0188 critical CVE likely CVE_2010_0188
    PDF contains the CVE-2010-0188 exploit template: XFA JavaScript heap-spray setup, a generated TIFF image payload, and assignment of that TIFF data to an XFA image field rawValue to trigger Adobe Reader's LibTIFF parser.
  • 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/
    • http://www.xfa.org/schema/xfa-data/1.0/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_pdf_script_00000238.bin
cb5fe489c063dcc7592642a3d70870d82106f2fc6c2ad627102de269332465bc		 pdf-embedded-script PDF raw stream script payload at offset 0x238 113251 bytes
Detection
ClamAV: Js.Exploit.HTML-27
Obfuscation or payload: unlikely

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