Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b8ce6b1af6865fb…

MALICIOUS

PDF

99.8 KB
MD5: 2cbe0377fb7d230dff321cb467bb25f7 SHA-1: f32fa8d962c0676e6f17a62261255ac8b5cf202f SHA-256: 6b8ce6b1af6865fb2389645e85fc72c074a3dc490fb9b647afaa48fc83ceec94
116 Risk Score

Malware Insights

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

The PDF sample exploits CVE-2010-0188, a known vulnerability in Adobe Reader's handling of XFA forms, to achieve code execution. The embedded script payload and ML classifier strongly indicate malicious intent. While no specific family is identified, the exploit's nature suggests it's used to download and execute a secondary stage.

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
7d5235fa4f7ebf8d95e88b4203308aa66b5d4b212b1ee3e036f8b4ad4c9cc842
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101415 bytes