Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d61b60eab39cdc3…

MALICIOUS

PDF

99.7 KB
MD5: 6497badec0ece28c291e25568a55b0d9 SHA-1: db5831c406b8b6bb22324beb3326eb3392acdbbb SHA-256: 6d61b60eab39cdc36d22a23e0d301e53d816523025b9946c827447bdf866a144
116 Risk Score

Malware Insights

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

The PDF file exploits CVE-2010-0188, a vulnerability in Adobe Reader related to XFA forms, to achieve code execution. The presence of an embedded file and the ML classifier's high confidence further support its malicious nature. No specific malware family could be identified from the available 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
353861f4eb77f696a0e9a936092e7238e4b5c0400ba9ef3a16c74f00239fcc29
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101353 bytes