Malicious PDF — malware analysis report

Static analysis result for SHA-256 118c1a65aa0abe80…

MALICIOUS

PDF

99.8 KB
MD5: 26c1f101c06da88626bdca78d01909fe SHA-1: 785f5e5df0e1a0365a4b84672e936a9c14630157 SHA-256: 118c1a65aa0abe80d385b9ca3a81a49ddfae300e4f1e10a2bc8f7fced8bbb143
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 the CVE-2010-0188 vulnerability in Adobe Reader, specifically targeting XFA forms. This exploit allows for the execution of arbitrary code, indicating a malicious intent to compromise the user's system. The presence of an embedded script payload further supports this conclusion.

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
c3bfad320fc4ac11b6b0eedd75f7d628a812d02e1ea0e58998f33f6fbee78e45		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101423 bytes

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