Malicious PDF — malware analysis report

Static analysis result for SHA-256 496060e4fc6c7901…

MALICIOUS

PDF

4.1 KB First seen: 2013-06-13
MD5: 7a0050b209f103464478e3c9be687cac SHA-1: 144a6e5731732c6c0169746bdb2be91b6d44afdd SHA-256: 496060e4fc6c7901b082d9e4b2fe14b584e77a36aaa76de02bf198a304412e80
110 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1553.005 Mark-of-the-Web Bypass

The PDF exhibits characteristics of containing an embedded script payload, indicated by the PDF_EMBEDDED_SCRIPT_PAYLOAD heuristic. While the document body is unreadable, the presence of an embedded file and script suggests a malicious intent, likely to execute further stages of an attack. The XFA form heuristic may indicate a technique to bypass certain security controls.

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 12866 bytes
SHA-256: 2e2ac6078c881d4f981f6e3b0c913f88ce2c6081bb70f7a31659b293e06a55fa

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