Malicious PDF — malware analysis report

Static analysis result for SHA-256 10fb123fe6f95a58…

MALICIOUS

PDF

73.4 KB
MD5: 764c2d24002053a0d6afc2bb093e3f93 SHA-1: 8d1b0b4cb99cd0d45506cb7104239a01c9d04d2f SHA-256: 10fb123fe6f95a58019ed1b30f3c0acabed9f75063b7d1dfbdd9c1b0ca91fd1c
168 Risk Score

Malware Insights

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

The PDF sample contains embedded JavaScript within an XFA form, which is known to be exploited by CVE-2010-0188. This exploit targets Adobe Reader and is designed to execute arbitrary code. The embedded script, although truncated, appears to be JavaScript, further supporting the exploitation vector. The primary goal is 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.
  • 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_0000034e.bin
2cb0ccbb2840d04c300c9abd185ece23c34965297b3040a47a9fa2c673f2f080
pdf-embedded-script PDF raw stream script payload at offset 0x34E 74422 bytes