Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f7c0c4de8e5772c…

MALICIOUS

PDF

51.0 KB
MD5: e5a713a5d8c95e35b85e8df612d2bd2b SHA-1: 80326024cf2f08d14ea8f3ff70fe706d918f4382 SHA-256: 1f7c0c4de8e5772c617d4738691b8af7f4c5ad4e010fa0004a2e93a7f95726c1
198 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 PDF file contains embedded XFA (XML Forms Architecture) data which is exploited via CVE-2010-0188, a known vulnerability in Adobe Reader. The heuristic firings indicate an embedded script payload within the XFA form, suggesting the document is designed to download and execute a secondary malicious payload. The embedded URLs, while not directly malicious, are related to XFA specifications.

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
01f051e4c835f2d2cc54319ffa24c580da12f8e3e55ff7db5cac14b2303f4f0b		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC8 51413 bytes

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