Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d05cfdba6c85e48…

MALICIOUS

PDF

99.5 KB
MD5: 465c1792f7d001f29dd0d3eb166c6a87 SHA-1: 5d3cb1d5e3ce64d82a1b3ac046ef83be6f84195f SHA-256: 7d05cfdba6c85e48f848891994a65a73743008d9624be1fbb76a2ad413acf007
116 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1059.007 JavaScript

The sample is a PDF document that exploits CVE-2010-0188, a known vulnerability in Adobe Reader related to XFA forms. The heuristic firings indicate an embedded script payload within a raw stream, which is characteristic of exploit-laden PDFs. The ML classifier strongly flags this as malicious. The embedded script likely attempts to download and execute a second-stage payload, although the specific URL is not directly extractable from the provided snippet.

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/ In PDF document text
    • http://www.xfa.org/schema/xfa-template/2.5/In PDF document text
    • http://www.xfa.org/schema/xfa-data/1.0/In PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_file_obj0008.bin
adc2e0e017381fdaed3bc1dd4f828975652ba214c27c94b65127fd21f30c9938		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101134 bytes

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