Malicious PDF — malware analysis report

Static analysis result for SHA-256 a41879773e2a47ca…

MALICIOUS

PDF

78.7 KB
MD5: deb778b61245d3f7c043f296cc80eb9b SHA-1: e66378e27f044d5de8255e6c9fb1ae351b7aed6b SHA-256: a41879773e2a47caf126fa1da183a2b133af1eb4cba66d30922b9403f1ae6502
136 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1059.007 JavaScript/VBScript

The PDF file exploits CVE-2010-0188, a vulnerability in Adobe Reader related to XFA forms. The critical heuristic firing indicates that the decoded XFA payload was matched. Additionally, a high-confidence heuristic indicates that the XFA form contains executable script, and a medium-confidence heuristic confirms an embedded script payload. The script itself appears to be obfuscated and truncated, making its exact function difficult to determine, but it is likely involved in downloading and executing a second-stage payload.

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
a0c04666a3fd60119e3dec1dfbfeaff86aab77c978163c9a494f467249993d21		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 79808 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.