Malicious PDF — malware analysis report

Static analysis result for SHA-256 b4edd9839b7170bd…

MALICIOUS

PDF

99.7 KB
MD5: fd3f5eda7dabab3bf37b63dd352dc0ca SHA-1: 0fe9d616f8a61d098078446ffb98c04e06ea3208 SHA-256: b4edd9839b7170bd9cfeb37e369cb57ef3d16e6f0d47dc04356b0e16444bd971
136 Risk Score

Malware Insights

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

The sample is a PDF file that exploits the CVE-2010-0188 vulnerability in Adobe Reader. This exploit is designed to execute arbitrary code, likely to download and run a second-stage payload. The presence of XFA forms and embedded scripts further supports the exploitation vector.

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
d7fdb221aa6b75dd6ab5fcf69ad3f8983fc90c02d1a47bfa49ad41ad376651aa		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101365 bytes

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