Malicious PDF — malware analysis report

Static analysis result for SHA-256 783ad922c3d0c67c…

MALICIOUS

PDF

79.0 KB
MD5: efdee1be41fb1bbacb664c057ae408ac SHA-1: 823adc003ffb8f18561bd8c72331fbb609510b26 SHA-256: 783ad922c3d0c67c9fcbb8c0bf1217afd19f038fbc3f83991b8d7b2ed495930d
116 Risk Score

Malware Insights

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

The critical heuristic firing for CVE-2010-0188 indicates that this PDF document exploits a known vulnerability in Adobe Reader's LibTIFF component. The embedded file and script payload further suggest that the exploit is used to download and execute additional malicious content. The ML classifier strongly supports the malicious nature of this file.

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
c93ef2332f5da29ed5519dc3ea6900dea7c8ef9c74bb62a7d0a7a7ea27d1fecf		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 80185 bytes

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