Malicious PDF — malware analysis report

Static analysis result for SHA-256 621c998bc49bbf23…

MALICIOUS

PDF

16.1 KB
MD5: 6e4dbda76bfe18daa5dadd9ef24a8574 SHA-1: b33cffc06ba7c686b54bd3c05f11dff99a5ff442 SHA-256: 621c998bc49bbf236d08e6727214b664247a765689b59fde860c42c0f5243946
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, including a critical finding for CVE-2010-0188, which is an Adobe Reader LibTIFF XFA image exploit. An embedded script was also detected, which likely contains the exploit code. The script's content is heavily obfuscated and truncated, but the presence of the exploit points to an attempt to gain initial code execution on the victim's system.

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_00000354.bin
90450739c6ce44f4c76f55a905cf3a824eebb442e18020ca45171bb1570e4bc5
pdf-embedded-script PDF raw stream script payload at offset 0x354 15752 bytes