Malicious PDF — malware analysis report

Static analysis result for SHA-256 f381a5f0f747f15a…

MALICIOUS

PDF

99.9 KB
MD5: ff9a5b931c1a8b9b3f46b43342649911 SHA-1: f733dd524fbb83dd9d9cd2b43fbbd219438cb2b4 SHA-256: f381a5f0f747f15a5c56b4b1b47655c45e3e98e10a2d42f3ea7a3f2fd551cea6
96 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. This exploit allows for arbitrary code execution. While no specific script was extracted, the presence of an embedded file and the exploit indicate a malicious intent to compromise the user's system. The embedded URLs are likely related to the XFA form structure and do not appear to be directly malicious.

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.
  • 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
0a6d633325c50eae9586a21c739f492f07e2d99e814449dff6bfaa7c616a36ad		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101513 bytes

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