Malicious PDF — malware analysis report

Static analysis result for SHA-256 33bccf90dfb957a8…

MALICIOUS

PDF

99.8 KB
MD5: 331a7910d414a23fa793d3bbf463f171 SHA-1: 923a3685450111ccdddbdc33c9a79716b97910d8 SHA-256: 33bccf90dfb957a877664e28e8d7986c4dc542ed08015ea47ddca9705625a15e
136 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The PDF file exploits the CVE-2010-0188 vulnerability in Adobe Reader's LibTIFF component, allowing for arbitrary code execution. The XFA form contains executable script which likely facilitates the exploit. No specific malware family was identified, but the exploit is designed to deliver a malicious 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
7c879c910d6929dca1312b4b2b8240e4a5e08f6d6336c5b267e6b2cb8920fe41		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101431 bytes

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