Malicious PDF — malware analysis report

Static analysis result for SHA-256 86ee4d097aab396b…

MALICIOUS

PDF

79.1 KB
MD5: 9a5dfbb0218cdf114371e47d6e81792c SHA-1: d61d47975e28c65f01ab40b6934826d11c6cbc85 SHA-256: 86ee4d097aab396b1fa931669bbf6d1509c3298ef303c6db846729a552fb40b3
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 this PDF exploits a known vulnerability in Adobe Reader's handling of XFA forms. The embedded script payload further suggests the exploit is used to download and execute additional malicious content. 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
a4e5a668fd9cb373a11fec0795d29f9b1342078a3a0998a3923685cf4500cc8d
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 80210 bytes