Malicious PDF — malware analysis report

Static analysis result for SHA-256 06a5e6322f6c86e8…

MALICIOUS

PDF

4.2 KB
MD5: 446c410ee45f6c81ac7b043554de26db SHA-1: 27d1ca8efde94388d61b2e0813b398aee5f2ee8c SHA-256: 06a5e6322f6c86e8f6cf13b75f2d7a525e138cdf5e5a848bacebf729e80cedf4
116 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

The critical heuristic firing for CVE-2010-0188 indicates that this PDF exploits a known vulnerability in Adobe Reader related to XFA forms. The ML classifier strongly supports a malicious verdict. The embedded file and script payload markers further suggest the PDF is designed to deliver and execute malicious code, likely a secondary payload, aligning with the typical behavior of a spearphishing attachment.

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/1.0\
    • 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
c8c1ff5de644eec6c8167839d4b76d5204b346c743a13e282d62ad2216e7e9c0		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xEA 12881 bytes

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