Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ef63b96aaded88e…

MALICIOUS

PDF

99.8 KB
MD5: efe9127ba77110bf3ea2443f53faa8e4 SHA-1: 57f8212f76a01a7174f9a57caa309084fac11ed8 SHA-256: 5ef63b96aaded88e89d5ce0eccc5dfa1828e2142709c7010bb33d510ebbeb6e3
116 Risk Score

Malware Insights

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

This PDF document exploits the CVE-2010-0188 vulnerability in Adobe Reader's XFA form processing. The critical heuristic firing indicates the exploitation of a known vulnerability, likely leading to arbitrary code execution. The presence of an embedded file and ML classification further support its malicious nature. No specific family could be identified, but the exploit vector is clear.

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
f6602980f1ef5ef2188f88be7859e5197db94b35f129caa7d4671daac7470eb7		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101419 bytes

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