Malicious PDF — malware analysis report

Static analysis result for SHA-256 c274ef76ebdfda32…

MALICIOUS

PDF

89.9 KB
MD5: eb262795473aeba549475f9f88278b6f SHA-1: 01a1dd001575c74ca9d3500fa2d113e03ba88c3e SHA-256: c274ef76ebdfda32c3dff28be9045b21791f838af872b6b5e1189e8f97f2a9e0
250 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1059.001 PowerShell

The sample is a PDF file that utilizes XFA forms and contains JavaScript for heap-spraying, indicative of an exploit. Specifically, the CVE-2010-0188 heuristic confirms exploitation of a vulnerability in Adobe Reader's LibTIFF component. The embedded script payload is likely responsible for executing the exploit, leading to arbitrary code execution. The presence of XFA and embedded script points towards a malicious PDF designed to compromise the user's system upon opening.

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.
  • XFA JavaScript heap-spray exploit code critical PDF_XFA_HEAP_SPRAY
    PDF contains XFA script content with heap-spray or shellcode-like JavaScript markers such as large encoded word sequences, util.pack, large arrays, or spray variable names. This is a weaponised Adobe Reader exploit pattern, not a normal interactive form.
  • 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.
  • 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_pdf_script_0000023c.bin
e5f3a216029283f1edde086c4091843d71974ddf3103e834a342ff1129c4b199		 pdf-embedded-script PDF raw stream script payload at offset 0x23C 91390 bytes

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