Malicious PDF — malware analysis report

Static analysis result for SHA-256 1873487a985c6c9b…

MALICIOUS

PDF

101.9 KB
MD5: 5d3fbcae6c906c1e178ca93928ae8ed6 SHA-1: 07e25cb161a3b2a39ae370833cb30eb44f2ad604 SHA-256: 1873487a985c6c9b09c84a11984ad0e8b9403400e2168177b6eef587066e84de
168 Risk Score

Malware Insights

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

The sample is a PDF file that leverages the XFA form functionality to exploit the CVE-2010-0188 vulnerability in Adobe Reader. This exploit is designed to execute a malicious payload, as indicated by the critical heuristic firings and ClamAV detection. The embedded JavaScript, though truncated, suggests an attempt to further execute code, likely to download and run 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_00000346.bin
622d4d9664d09f3620945115fddf09f300570446595e7d154464ac8cfd56f6bf
pdf-embedded-script PDF raw stream script payload at offset 0x346 103601 bytes