Malicious PDF — malware analysis report

Static analysis result for SHA-256 94d0b7d65eee15ea…

MALICIOUS

PDF

4.1 KB First seen: 2013-06-27
MD5: 4c923a1feea74913f403f82c972e9e18 SHA-1: da3fcf6835ab112d45908e08166d4711a1cfd70d SHA-256: 94d0b7d65eee15eae40f5959f98f122e6a4bf21b298d89df7443637b3fef9a05
110 Risk Score

Malware Insights

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

The PDF file was flagged for containing an embedded script payload. This indicates the document is likely intended to execute malicious code upon opening or interaction. The embedded file artifact further supports the delivery of a secondary payload. The XFA form heuristic might be related to how the script is embedded or executed.

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 12868 bytes
SHA-256: 8a2bb094c3ba358f75948e388c0b5177ee5d60041545dadae7b09fabc144a9f6

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