Malicious PDF — malware analysis report

Static analysis result for SHA-256 a3633bb5062bc7d7…

MALICIOUS

PDF

89.7 KB
MD5: fbdafa1a287272dfd72bd1bbc6f23754 SHA-1: 5646a6e347ae60a74651b77022000a5520335a9b SHA-256: a3633bb5062bc7d7d710ef9c95ac9c10d3b78aab3a06ff20e71be717056c6b34
196 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1204.001 Malicious Link: Malicious Link T1204.002 Malicious Link: Clickjacking T1059 Command and Scripting Interpreter T1059.007 Command and Scripting Interpreter: JavaScript

The file is a PDF document that exploits CVE-2010-0188, a vulnerability in Adobe Reader related to XFA forms and LibTIFF. The critical heuristic firings indicate that the PDF contains an embedded script payload within an XFA form, designed to be executed by a vulnerable reader. This suggests the document's primary purpose is to deliver and execute a secondary malicious payload, likely for further system compromise.

Heuristics 7

  • 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.
  • ClamAV: Pdf.Exploit.Agent-6136306-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-6136306-0
  • 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
826e5598b3cc90c752aab47f0b4d25aafcf3d282c8e2f770aa31885990ac5b0a		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC8 91111 bytes

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