Malicious PDF — malware analysis report

Static analysis result for SHA-256 951586d7bebbf2ca…

MALICIOUS

PDF

4.1 KB First seen: 2013-06-26
MD5: 5a799191b3773c78308058e3d83ad537 SHA-1: 8d7f1634825e79977d08244994cf329c7331d421 SHA-256: 951586d7bebbf2cab7c18c29ea9106c8d148ece269a4c556eac2c410b3bdae31
110 Risk Score

Malware Insights

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

The PDF file exhibits suspicious characteristics, including an embedded script payload. This suggests the document is designed to deliver and execute malicious code. The presence of an embedded file further supports this, likely serving as the payload. The exact nature of the script could not be determined due to obfuscation, but its presence is a strong indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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 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 script payload in PDF stream info 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 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/1.0\ In PDF document text
    • http://www.xfa.org/schema/xfa-template/2.5/In PDF document text
    • http://www.xfa.org/schema/xfa-data/1.0/In PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_file_obj0008.bin pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xEA 12652 bytes
SHA-256: c5ca3acb6d9ee9bf0fd29c71de35c8cece63fd8fbf3360754afe942728aed423

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