Malicious PDF — malware analysis report

Static analysis result for SHA-256 07922acde6602679…

MALICIOUS

PDF

102.1 KB
MD5: 5f5f7f231b3cd17e0a92f09c425716b9 SHA-1: 0b1b0bdd3b3126817d6ab56db22bec8b326192a8 SHA-256: 07922acde6602679a276e80e18f094c80cd8e4a866ddd1cc24157688b7c0f7ba
168 Risk Score

Malware Insights

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

The sample is a PDF file that contains an embedded XFA form, which is known to be vulnerable to CVE-2010-0188. The embedded script, when decoded, appears to be JavaScript that attempts to exploit this vulnerability. The ML classifier and ClamAV also flagged this file as malicious, indicating a high likelihood of exploit execution.

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.
  • ClamAV: Pdf.Exploit.Agent-6136306-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-6136306-0
  • 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://www.xfa.org/schema/xfa-template/2.5/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_pdf_script_00000346.bin
c01bf11db21e7087aed50fd09a27f1e9a9383db487e8ae8e327b3cf06db7cb52
pdf-embedded-script PDF raw stream script payload at offset 0x346 103854 bytes