Malicious PDF — malware analysis report

Static analysis result for SHA-256 885cc8ff0a9d9eae…

MALICIOUS

PDF

5.9 KB Created: 2013-04-29 11:13:02
MD5: 6a639c5df304280665510474a76f970c SHA-1: 978078b39854a110a3a4106e7d72691d3354c78d SHA-256: 885cc8ff0a9d9eae7cb3c345761cece8de7091ec9ce2e141f9507aecc49e91e5
218 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1059 Command and Scripting Interpreter

The PDF file contains an embedded XFA form and triggers the CVE-2010-0188 exploit, which is a critical vulnerability in Adobe Reader related to LibTIFF processing. This exploit allows for arbitrary code execution on the victim's machine. An embedded script payload was also detected, further indicating malicious intent. The file is identified as malicious by ClamAV with the signature Pdf.Exploit.CVE_2010_0188-10.

Heuristics 7

  • 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.CVE_2010_0188-10 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.CVE_2010_0188-10
  • 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.
  • 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_obj0006.bin
322fca91e0d998169c92154a9abba1f4d53f90658fd8dd9dd7d2aa5d58eb98f7
pdf-embedded-file PDF EmbeddedFile object 6 at offset 0x431 78326 bytes
Detection
ClamAV: Pdf.Exploit.CVE_2010_0188-10
Obfuscation or payload: likely
Carved artifact contains 2 long base64-like blob(s).