Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f186d0d0e1fca8e…

MALICIOUS

PDF

99.6 KB
MD5: a772620f534c6c67016daed8038f71fd SHA-1: 760a685adfd5e8f2ebb8f2500da98ad399c55582 SHA-256: 7f186d0d0e1fca8eba5ee27665b17056f51a6f072657699463f2982d777e8082
116 Risk Score

Malware Insights

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

The sample is a PDF file identified as malicious, exploiting CVE-2010-0188, a known vulnerability in Adobe Reader related to XFA forms. The heuristic firings indicate an embedded script payload within the PDF, which is likely responsible for executing the exploit. The ML classifier strongly supports the malicious verdict. While the specific payload is not fully detailed, the exploit's nature suggests it's designed to download and execute a secondary malicious component.

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
09fde05c26ace8f026519dbd619ae68836ca2ad0b6cc16e6f9ab2030f1bd50b8		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101207 bytes

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