Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f777f4ea653b956…

MALICIOUS

PDF

99.9 KB
MD5: 58613189673b2feedbf454a9eed208ad SHA-1: 077f5bd2e0baf5eac3d8c4e7e80a38d40503d2c6 SHA-256: 5f777f4ea653b9568f18d61078cbdc84e3a012ed13d09a1060fb77369455ec5e
116 Risk Score

Malware Insights

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

The PDF sample contains embedded content and triggers the CVE-2010-0188 exploit, indicating it is designed to achieve arbitrary code execution. The ML classifier strongly flags this PDF as malicious. The exploit likely serves to download and execute a secondary payload, though no specific URLs for this payload were found in the provided evidence.

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
ef791c08e4bd34f3dd9adb1c6627016d64df6e1a96e69a2d77fbc2e15ff93b12		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101505 bytes

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