Malicious PDF — malware analysis report

Static analysis result for SHA-256 11382d43f9b6360e…

MALICIOUS

PDF

99.9 KB
MD5: b40d886aa0ef566e3c5d36379a86b23f SHA-1: 5bf25b7746a697ad815b61216600534d1e2b4d31 SHA-256: 11382d43f9b6360e6fbedad98c80af60279003d61e8a4ed9a7971787636c96c4
116 Risk Score

Malware Insights

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

This PDF document is malicious due to its exploitation of CVE-2010-0188, a known vulnerability in Adobe Reader's XFA form processing. The heuristic firings indicate an embedded script payload and an exploit targeting this specific CVE. The likely intent is to leverage this exploit to gain initial execution, potentially to download and run a secondary malicious payload.

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
1aa507226d630b7746832782dcea4ca46798ea100b2f072db13c1d8145465801		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101512 bytes

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