Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0f73598ebbddba9…

MALICIOUS

PDF

3.9 KB Authoring application: hXr (via va)
MD5: 1817339fec30092068f0c981de5e2740 SHA-1: 7bb44ce0b178bfe17a0a42ba5aba1b9801e78639 SHA-256: f0f73598ebbddba998d69259f2bf33e91f8987e4cc3050c58d3c6e4199684de1
98 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1059.004 Command and Scripting Interpreter: PowerShell

The PDF file contains an embedded XFA form that triggers the CVE-2010-0188 exploit in Adobe Reader. This exploit is designed to execute arbitrary code, likely to download and run a second-stage payload. The embedded file 'embedded_file_obj0041.bin' is suspicious and likely contains the malicious payload.

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
90f0a7033dd63545272f718c86c14f27fc29fe158907939d89446eda14f3e9bc
pdf-embedded-file PDF EmbeddedFile object 41 at offset 0x53 9869 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 1 long base64-like blob(s).