Malicious PDF — malware analysis report

Static analysis result for SHA-256 4b28874016d435c4…

MALICIOUS

PDF

100.1 KB
MD5: 11f68c6ad183723d9f1196c8cce940c6 SHA-1: 54b43f3d2d7c75049af9a6102e30819d2d7cdcde SHA-256: 4b28874016d435c49b64710ba0223fc426ce3d9966e1a3da8c2439c780a8e4dd
136 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File: Malicious PDF

The sample is a PDF document that exploits CVE-2010-0188, a vulnerability in Adobe Reader related to XFA forms. The critical heuristic indicates a matched decoded XFA payload, suggesting the PDF is designed to deliver a malicious payload. The presence of embedded script markers and XFA forms containing executable scripts further supports this. No specific family could be identified, but the attack pattern is consistent with PDF-based exploits.

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
9e39e9169bd0b75a127533aa31d820057deb403a57934f5ccef3294c87916df4		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101722 bytes

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