Malicious PDF — malware analysis report

Static analysis result for SHA-256 c03ed6cc3fb9244a…

MALICIOUS

PDF

3.9 KB Authoring application: rxode (via va)
MD5: 4c20aff85b7a01489be931ca6ce4a898 SHA-1: 24091975423fd46f84ca8a43e8acac39bea8bfba SHA-256: c03ed6cc3fb9244ade0259c5c54c123651256e5abe9a65a0206f92d5fb471f51
98 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1566.001 Spearphishing Attachment

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 leading to the download and execution of a second-stage payload. The embedded artifact 'embedded_file_obj0041.bin' is also suspicious and likely contains the 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
8ce1ef6d0f684f820eba112859d910aada4bb2533f32848161e0dcdd695cb484
pdf-embedded-file PDF EmbeddedFile object 41 at offset 0x53 9818 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 1 long base64-like blob(s).