Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea984ebd6bd09485…

MALICIOUS

PDF

78.9 KB
MD5: 60fbb8a08d376a1d0235e98241a101dc SHA-1: 6eabb3158b9abf1629c637b90def82ccc3372630 SHA-256: ea984ebd6bd09485e301367b8ac932bfd3ffd95f9bb8a2c318d4ac9a2ae60f98
136 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The PDF file exploits CVE-2010-0188, a vulnerability in Adobe Reader related to XFA forms. The critical heuristic indicates that the XFA payload was decoded from a raw stream, and a high-confidence heuristic confirms that the XFA form contains executable script. This script is likely responsible for downloading and executing a second-stage payload, although the specific script content is not detailed here. The embedded URLs are related to XFA schemas and Adobe, but their reputation is unknown or benign, suggesting they are not direct IOCs for malicious activity.

Heuristics 6

  • 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.
  • XFA form contains executable script high CVE related PDF_XFA_SCRIPT
    PDF embeds an XFA form whose dataset contains a <script> or <xfa:script> block — XFA scripting has been the exploit primitive for several Adobe Reader RCEs (CVE-2010-0188 family, CVE-2018-4901, and others). Plain XFA without scripts is far less risky.
  • Embedded script payload in PDF stream medium 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 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 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
a15c410f214bfd17e5e4ce173a9d173a58909da2c8c3030637cc4dd188fb02c1		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 80024 bytes

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