Malicious PDF — malware analysis report

Static analysis result for SHA-256 64b05922bcb91f8d…

MALICIOUS

PDF

99.6 KB
MD5: dd858970f56a11e5fff97d663c2d136d SHA-1: 1d68ffa7afa65dc31556988dfd74861486aa51cb SHA-256: 64b05922bcb91f8db41249ec51704b677505e7ed439f1836aabc0f27ff837b98
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 indicates the exploit payload was decoded from a raw stream. The embedded file and script payload markers suggest the exploit is used to download and execute additional malicious content, aligning with a common attack pattern for PDF exploits. The benign URLs are likely part of the XFA form structure and do not indicate malicious intent.

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
b2135b03eda23d37feb2b9fe5e0b6432bb358a2cdcf5f50bbf2c631f80e39889		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101254 bytes

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