Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7c89c889bbce493…

MALICIOUS

PDF

99.7 KB
MD5: e1526ab539e7e02d48347fdd86dee070 SHA-1: 9bd821b83bd02436fb5466fdbb45b4372054803f SHA-256: f7c89c889bbce49323456987a0696e13668da9079ec64727164d5584b4378d1d
138 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File: User Execution: Malicious File T1059.001 Command and Scripting Interpreter: PowerShell

This PDF document exploits the CVE-2010-0188 vulnerability in Adobe Reader via an XFA form. The embedded script payload is likely responsible for executing a second-stage payload, although the exact nature of the payload could not be determined due to obfuscation. The presence of XFA forms and embedded scripts is characteristic of exploit documents designed to deliver malware.

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
3a8b07e09fe73915b1bdef2f8452dab112cdf5c47214cc23a50054afb4bb2898		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101353 bytes

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