Malicious PDF — malware analysis report

Static analysis result for SHA-256 6cf5f3f6e1d426af…

MALICIOUS

PDF

99.9 KB
MD5: d7fa2d34c201727ee92dfd1de872c1b3 SHA-1: 3cfc1bf1c6a21d00e38b05746eb9cda5f47f7044 SHA-256: 6cf5f3f6e1d426af7ca05dbda73b9459c480a0ca79723773e897980589a087cf
116 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1059.007 JavaScript

The sample is a PDF file identified as malicious, primarily due to the critical heuristic firing for CVE-2010-0188, an Adobe Reader XFA exploit. This indicates the PDF is designed to exploit a known vulnerability in Adobe Reader to achieve code execution. The presence of embedded script and an embedded file further supports this, suggesting the exploit is used to download and run a secondary payload. No specific family could be identified.

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 low 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/
    • 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
5b03a9e815ad68254e73d3f5473fb976e06b7d214190fac9f0f2d25116d3335a		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101538 bytes

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