Malicious PDF — malware analysis report

Static analysis result for SHA-256 3714976000fcd55b…

MALICIOUS

PDF

99.7 KB
MD5: b2a79ec1ef60ac6497210c1e5ccf9d60 SHA-1: d0f377cad22e6df021f77f35f1d14ac6a58ae0cf SHA-256: 3714976000fcd55bcc559f4fe902e26c94a0b5ae222f4373825e38eace6a3a84
136 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The PDF file exploits CVE-2010-0188, a vulnerability in Adobe Reader related to LibTIFF XFA image processing. The heuristic firings indicate the presence of an XFA form with executable script, and an embedded script payload. This suggests the document is designed to leverage this exploit to deliver a malicious payload, although the specific nature of the payload is not detailed in the provided evidence. The embedded URLs are related to XFA schemas and do not appear to be directly malicious.

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
29a25850f12a0058fb9e9c9f5d85f05a3e327acb0afdc049e9abdafd44b6f5fc		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101295 bytes

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