Malicious PDF — malware analysis report

Static analysis result for SHA-256 07f42b23c6312eed…

MALICIOUS

PDF

12.8 KB
MD5: d7da64f51a5f6a337f4ea04abd8add41 SHA-1: 1b6d8620b0102241e2ba10d81db2b07c1ed2f0b3 SHA-256: 07f42b23c6312eed3332effd2a5ae75ad135c19940967074ac2d03c8c24e8a11
168 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

The sample is a PDF file that exploits the CVE-2010-0188 vulnerability in Adobe Reader, as indicated by critical heuristic firings. The embedded XFA script contains obfuscated JavaScript, likely intended to download and execute a second-stage payload. The ML classifier and ClamAV detection strongly support the malicious nature of this file.

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_00000384.bin
cff735fb0e0b8360da97240d6727aba2c3ad59c0fc81e64cc18bb4dd0a3f989b
pdf-embedded-script PDF raw stream script payload at offset 0x384 12312 bytes