Malicious PDF — malware analysis report

Static analysis result for SHA-256 ebb3a74020a85ab0…

MALICIOUS

PDF

82.4 KB
MD5: d47e5f822c8c35b517bc5a9a2bb9e57f SHA-1: f979253ab47b1b1b9b273ab1c6ad85816aa8f347 SHA-256: ebb3a74020a85ab0ff6e1b46aabbf895199ebd019decdc9ee49cfaa0064d82c8
196 Risk Score

Malware Insights

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

The sample is a PDF file that exploits CVE-2010-0188, a vulnerability in Adobe Reader related to XFA forms. The critical heuristic firings indicate that the PDF contains an embedded script payload designed to be executed by the vulnerable reader. This exploit likely serves as a dropper for a secondary malicious payload, as suggested by the ClamAV detection name 'Pdf.Exploit.Dropped-93'. No specific malware family could be identified.

Heuristics 7

  • 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.Dropped-93 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Dropped-93
  • 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.
  • Embedded file low PDF_EMBEDDED
    PDF embeds a file attachment — could carry an executable or another weaponised document as a nested payload
  • 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_file_obj0008.bin
1c155370c4242bde7c319663489f6b75b3502cb1e8b08f514b63cd07669dd549		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 83612 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.