Malicious PDF — malware analysis report

Static analysis result for SHA-256 870fbd0af6efbdb9…

MALICIOUS

PDF

99.8 KB
MD5: e7b0868020d46f6d99019aa325ca112f SHA-1: 7650284825ebe26e518389c9239b39d382c8dad7 SHA-256: 870fbd0af6efbdb96669ea373696e73963ce32b3c360ab4c49726f96c280a478
116 Risk Score

Malware Insights

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

The PDF file exploits the CVE-2010-0188 vulnerability in Adobe Reader's XFA form processing. This exploit is designed to execute arbitrary code, which is typically used to download and run a secondary malicious payload. The ML classifier strongly indicates malicious intent, and the presence of an embedded file further supports this. No specific malware 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
aa18218701620348414ff50f2eca2b1e9cf743240c1e1d0103dba7364454775d		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101421 bytes

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