Malicious PDF — malware analysis report

Static analysis result for SHA-256 06a9401f84b36e66…

MALICIOUS

PDF

99.8 KB
MD5: 26e155761fca9431aa3404b7b890e701 SHA-1: 517a4d04f124675a91cf1f3c3e753ed2adca37c7 SHA-256: 06a9401f84b36e66c83415339ebdbd7faf713d18731dce83351c7a44841afe2e
116 Risk Score

Malware Insights

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

The sample is a PDF file identified as malicious by an ML classifier and contains a critical heuristic for CVE-2010-0188, an Adobe Reader exploit. This indicates the file is designed to exploit a vulnerability in the PDF reader to gain execution. The presence of an embedded script payload further suggests the intent to download and execute additional malicious content.

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
ec8a25af1e04b62efa0ba512c9c01bb2f6d440229f9fe76d11c5fbf57f6e10c7		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101400 bytes

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