Malicious PDF — malware analysis report

Static analysis result for SHA-256 b59ae2be66271534…

MALICIOUS

PDF

99.6 KB
MD5: ef9114c5bc74f8533ce0cbb8e469319e SHA-1: f1be44137dcdfd05e8bbbd9b29a9326d90c864a8 SHA-256: b59ae2be6627153440fd114d7d7f83b598fdc72ee75d4889a3d6bf7e9b5de38c
138 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The PDF file exploits CVE-2010-0188, a vulnerability in Adobe Reader related to XFA forms. This exploit allows for arbitrary code execution. While no specific script was directly extracted and analyzed for its payload, the presence of XFA forms and embedded script markers strongly suggests the document is designed to leverage this vulnerability to download and execute a secondary payload. The embedded URLs are likely related to the exploit or initial stages of the attack.

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
fc260eff5b6d9f606a72c92b90630a3f30c5f3ab38f7e7141fbfcd8c2fcbd16b		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101251 bytes

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