Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b474932012d6494…

MALICIOUS

PDF

16.3 KB
MD5: e3657623b3b3e7c88863bf5c12f05a06 SHA-1: c4b7d2c067535da6014d0e8173f24132635ed0a2 SHA-256: 5b474932012d6494269f9d53755f254c34b162d80573b872fcab611e500881dd
168 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 multiple heuristics and ClamAV, specifically flagging the CVE-2010-0188 exploit for Adobe Reader. An embedded JavaScript payload was found, which is likely responsible for executing the exploit and downloading further malicious content. The XFA form structure is also noted as a potential vector for this exploit.

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_00000359.bin
190279f1af9a48ff06bace2fc2c7002efc059d9962fa3e8832f7e99db70f07d1
pdf-embedded-script PDF raw stream script payload at offset 0x359 15928 bytes