Malicious PDF — malware analysis report

Static analysis result for SHA-256 22887877e8110058…

MALICIOUS

PDF

87.1 KB
MD5: 1a08b984c716c30962e0f8b08b9d9439 SHA-1: 03ceb10bd9171b4da28e853143be5fee28ea6d3f SHA-256: 22887877e81100584a2b004a1d6d3637219286be6e5a04e0189fc018e589650a
136 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The PDF sample contains XFA forms and triggers the CVE-2010-0188 exploit, which is known to target Adobe Reader. This exploit is used to achieve arbitrary code execution. The embedded script payload further indicates malicious intent, likely to download and execute a secondary payload. No specific family could be identified.

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
7473a2e16c6a346df184b35a71434f9ca2bfabdcbc034f73dac7f85af041c7e7		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 88437 bytes

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