Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb0251d8dd857d34…

MALICIOUS

PDF

99.7 KB
MD5: 5048781a13eb5cf8c030ab0035d80143 SHA-1: ad937908d8a6df2bb0edad7956fdfd4a721dbc7f SHA-256: eb0251d8dd857d346362e92a6f66618c6e7ec57874daa5cf0330f33336e5fe40
136 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File: User Execution: Malicious File T1566.001 Phishing: Spearphishing Attachment

This PDF document exploits the CVE-2010-0188 vulnerability in Adobe Reader's LibTIFF component. The XFA form contains an executable script that is likely responsible for delivering the malicious payload. The embedded file and script heuristics strongly indicate this is a malicious document designed to exploit a known PDF vulnerability.

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
337b5cfcb6210ba8d52e8f44970a1f12ef67b74c1f8ffcc4d614a0a39655c7a3		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101294 bytes

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