Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3155408b4b5b96d…

MALICIOUS

PDF

90.3 KB
MD5: ffa7c438b9e2d63c2134d4ca7e234c26 SHA-1: 67891817d918978a4f4fc10361c14411d7a9d0e6 SHA-256: e3155408b4b5b96dce70a02623fe5238943a0f2c5eed9ab7649110948bfd0cae
156 Risk Score

Malware Insights

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

The PDF file contains an embedded script payload and exploits CVE-2010-0188, a known vulnerability in Adobe Reader related to XFA forms. This indicates the file is designed to execute malicious code upon opening. The embedded file and ClamAV detection further confirm its malicious nature. The primary attack vector is likely the exploitation of this vulnerability to download and execute a secondary payload.

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
  • 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.
  • Embedded file low PDF_EMBEDDED
    PDF embeds a file attachment — could carry an executable or another weaponised document as a nested payload
  • 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_file_obj0008.bin
bf5920e3fea7955fa385d35e9c7ca403b3ff343ad4b02eb6301bd358ad67bc58
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC8 91717 bytes