Malicious PDF — malware analysis report

Static analysis result for SHA-256 735af39633966719…

MALICIOUS

PDF

99.8 KB
MD5: 256bde502de93ec5f0b26fa7c05bf499 SHA-1: 91118cbd9ed576757946e53a6610d457c319aa44 SHA-256: 735af39633966719e13f7a1af341ac3dd88bd711913e77b39a01a411814584e4
116 Risk Score

Malware Insights

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

The PDF file exploits the CVE-2010-0188 vulnerability in Adobe Reader's LibTIFF component, which is a critical finding. This exploit allows for the execution of arbitrary code on the victim's machine. The presence of XFA forms and embedded files further supports the malicious nature of this document, likely delivered as a spearphishing attachment.

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
0953a9cffeeb32561631d4464c08623e667c84dce6ec09c4b2c633313adb4cea		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101408 bytes

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