Malicious PDF — malware analysis report

Static analysis result for SHA-256 82dea2243ccd5940…

MALICIOUS

PDF

79.0 KB
MD5: 393c4850ab24ec7cc64138db7341bb49 SHA-1: 04ed144954506b41152a956e5a8345dbb469b62c SHA-256: 82dea2243ccd594016b33696fc1498e71c6e48fa07f91414de170633b19986b8
116 Risk Score

Malware Insights

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

This PDF document exploits the CVE-2010-0188 vulnerability in Adobe Reader's handling of XFA forms. The critical heuristic firing confirms the exploit payload was extracted from the raw stream. The embedded file and script payload markers indicate the likely download and execution of a secondary stage. The benign URLs are likely unrelated to the malicious functionality.

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
21a7e8ec60fc250e8cdd36568dcfa08a699a0c918e2ddfc41204a495912cb8dc		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 80186 bytes

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