Malicious PDF — malware analysis report

Static analysis result for SHA-256 ecc31f12813873d3…

MALICIOUS

PDF

99.9 KB
MD5: 270b8cb659f1bd2afecaac673e9a852d SHA-1: c79d1dfa511c26bc07a6793f52d49be9d1c9a59f SHA-256: ecc31f12813873d3d47c6edd52abe36ff69865017b1baaa2c88d65deac3c1357
138 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The sample is a PDF document that exploits the CVE-2010-0188 vulnerability in Adobe Reader's LibTIFF component. This vulnerability allows for arbitrary code execution when a vulnerable version of Adobe Reader opens the malicious PDF. The PDF contains XFA forms and embedded script payloads, which are leveraged by the exploit. No specific malware family was identified, but the exploit's nature suggests a downloader or dropper.

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.
  • 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
b5b61855b4b919fd0eef4797c4b159dc32897bec4fc6d782db4ec1a60e81ed69		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101591 bytes

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