Malicious PDF — malware analysis report

Static analysis result for SHA-256 230ff076c335a7b8…

MALICIOUS

PDF

3.8 KB Authoring application: rxode (via va)
MD5: 40cb019b1f1f6d9b67fda4f3ef4068b3 SHA-1: b61b02f2b38ccd15c2fc9222e06692b3fd2b9e08 SHA-256: 230ff076c335a7b85a1e132ddf8a6e12cf3b5a6effe48b711697a4141705ab29
98 Risk Score

Malware Insights

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

The PDF file contains an embedded XFA form that triggers the CVE-2010-0188 exploit in Adobe Reader. This exploit is designed to achieve arbitrary code execution. An embedded script payload was also detected, suggesting the exploit is used to download and execute a second-stage payload. The exact nature of the payload could not be determined due to the lack of further analysis or script deobfuscation.

Heuristics 5

  • 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.
  • 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
  • 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
embedded_file_obj0041.bin
ff9cf32a7741153bad0b740ad59a202914659ac1cb867c5ec6b6f0ed0af6eb61
pdf-embedded-file PDF EmbeddedFile object 41 at offset 0x53 9562 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 1 long base64-like blob(s).