Malicious PDF — malware analysis report

Static analysis result for SHA-256 04c0bbf41363fda2…

MALICIOUS

PDF

99.7 KB
MD5: e4b9b2ff8103047866a4f2079d9376e9 SHA-1: 4deb734bd5cb3c44699da714db679ab20c39c07f SHA-256: 04c0bbf41363fda2bf8c7af13bccb3023f7cd91e3132a357ab96e9544fe3c36f
116 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1059.007 JavaScript

The sample is a PDF file identified as malicious by an ML classifier. It exploits CVE-2010-0188, a known vulnerability in Adobe Reader related to XFA forms, to achieve code execution. The embedded script payload within the PDF stream further supports the malicious intent, likely to download and execute a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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 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 script payload in PDF stream low 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 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
8d56349cd0390ffb49d0b8d777630adb88921824935a2d2d81bdaa132d6c47dc
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101344 bytes