Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0638ba787350ac7…

MALICIOUS

PDF

99.7 KB
MD5: b35ab3092bde3d644262edf3110a42ee SHA-1: 2bf046d865e7ec2a6e56b8b48cdb38e81d950858 SHA-256: b0638ba787350ac7708fc9332fdfdc20e7b85f31ecca8ba22cc890c58257d4f2
136 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File: Malicious PDF T1059.001 Command and Scripting Interpreter: PowerShell

The PDF file contains embedded XFA (XML Forms Architecture) data and triggers the CVE-2010-0188 vulnerability, which is known to be exploitable by malicious PDFs. The presence of an embedded script payload within the XFA form further indicates malicious intent. The script likely attempts to download and execute a second-stage payload. The embedded URLs are related to XFA but their reputation is unknown, so they are included as potential indicators.

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
b6fa651f83f382b6370af7b73edceb6a6b000482f745343bef4b2b4272c5833f		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101330 bytes

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