Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c7803c9e1946579…

MALICIOUS

PDF

78.9 KB
MD5: cee488021d8769f0dfc0cfd55ec760ed SHA-1: 06b747f5ff9305447b7583acdc3109f3f08f21b2 SHA-256: 5c7803c9e19465790b4db0aa763bb949a68985836769173a0d22de270a4f06a0
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 by an ML classifier and contains a critical heuristic firing for CVE-2010-0188, an Adobe Reader XFA exploit. This exploit likely facilitates the execution of embedded JavaScript, which is commonly used to download and execute further malicious content. The benign URLs present are likely decoys or standard XFA schema references.

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
20f4b1797448a2920e1051711f55bb618b63cc880409152eaeb32cb3a9b73a4b		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 80048 bytes

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