Malicious PDF — malware analysis report

Static analysis result for SHA-256 73481744667c7475…

MALICIOUS

PDF

99.7 KB
MD5: c558506c29a04c15f7cf9446de4c352e SHA-1: e5c15a006493c62ffcca9ec85d19530b687339a2 SHA-256: 73481744667c7475f7a095466a2f99f5b70e9ad882b6b1112bbcdbd50f94fb9e
116 Risk Score

Malware Insights

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

The PDF file contains embedded XFA (XML Forms Architecture) content, which is known to be vulnerable to CVE-2010-0188. This exploit targets Adobe Reader and is capable of executing arbitrary code. The ML classifier strongly indicates maliciousness. While no specific malicious URLs or scripts were directly extracted, the exploit itself is the primary indicator of compromise.

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
b661492f9d7a5c1651b8724bc0848c7022039de6ae98124c3ad0ba210ce97884		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101360 bytes

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