Malicious PDF — malware analysis report

Static analysis result for SHA-256 fdfbeeeac125423e…

MALICIOUS

PDF

81.8 KB
MD5: 09bab0a1abc7dfd1f0305b8266bd5fa4 SHA-1: 2e344febcb5ad4d453d26054c19698fff7d24ceb SHA-256: fdfbeeeac125423e3d549fff7abe51162d3eef01e41eb44c391e76ac81fe8ae7
156 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1204.002 Malicious File T1059.001 PowerShell

The sample is a PDF document that exploits CVE-2010-0188, a vulnerability in Adobe Reader's LibTIFF handling. The PDF contains an embedded script payload and is detected by ClamAV as Pdf.Exploit.Dropped-93. The embedded script likely downloads and executes a second-stage payload, although the script content was truncated and heavily obfuscated, preventing a full analysis of its specific actions. The presence of an embedded file and the XFA form further indicate a malicious intent to exploit document viewers.

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.
  • 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
f516d896cb55f59c86cf4f0e26c5dfbda053a07aae38b94459c31e4742cd3802		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 83302 bytes

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