Malicious PDF — malware analysis report

Static analysis result for SHA-256 054f84d456d3f90d…

MALICIOUS

PDF

78.6 KB
MD5: 450de0df7e48137f2d594cf7c7464995 SHA-1: 641c8d867743baf574889f3473ae4e8c9207c53c SHA-256: 054f84d456d3f90d95aa297d84cc9e6ec86e79a3122d1e3c9ca08acc0b2fd5bf
116 Risk Score

Malware Insights

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

The sample is a PDF file that exploits CVE-2010-0188, a vulnerability in Adobe Reader related to XFA forms. This exploit allows for the execution of arbitrary code, likely to download and run a secondary payload. The ML classifier strongly indicates maliciousness, and the embedded file suggests a multi-stage attack. The presence of XFA forms and the specific CVE point to a client-side exploit.

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
6a028e4f88acb13f9cffaf693c46403bedae14be39668bc4d631fb8d59d42733		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 79758 bytes

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