Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d3327513bd6c7c4…

MALICIOUS

PDF

111.4 KB
MD5: c6ab66c1192715a46dbe60fcdb64afed SHA-1: fff16a494d2f5acc413421739c70ebfd338bfbd5 SHA-256: 8d3327513bd6c7c487551a3dd74af008321a0796058cd49a869a1cb6812bef43
190 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1059.001 PowerShell

The PDF file contains an XFA form with an embedded script, which is indicative of exploitation. Heuristics confirm a critical vulnerability CVE-2010-0188 related to Adobe Reader and LibTIFF XFA images. The embedded script likely downloads and executes a second-stage payload, as suggested by the ClamAV detection name 'Pdf.Exploit.Agent-6136306-0'. The document body content is heavily obfuscated and does not provide further context on the lure.

Heuristics 6

  • 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.
  • XFA form contains executable script high CVE related PDF_XFA_SCRIPT
    PDF embeds an XFA form whose dataset contains a <script> or <xfa:script> block — XFA scripting has been the exploit primitive for several Adobe Reader RCEs (CVE-2010-0188 family, CVE-2018-4901, and others). Plain XFA without scripts is far less risky.
  • ClamAV: Pdf.Exploit.Agent-6136306-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-6136306-0
  • Embedded script payload in PDF stream medium 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.
  • XFA form low PDF_XFA
    PDF uses XML Forms Architecture — can contain script logic
  • 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://ns.adobe.com/xdp/
    • http://www.xfa.org/schema/xfa-template/2.5/
    • http://www.xfa.org/schema/xfa-data/1.0/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_pdf_script_00000238.bin
4ca444ffed89bd7036b2cb180049a315832bfd7589e69543ff1a1aeb007ab256		 pdf-embedded-script PDF raw stream script payload at offset 0x238 113397 bytes

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