Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7142019e43e091f…

MALICIOUS

PDF

99.9 KB
MD5: f1e3225d608afc0f4a6d3af26fdb9bf8 SHA-1: e96cd07b2bc06f9fc3e60872f1151e1b52d24af2 SHA-256: e7142019e43e091fb53cebdf6dbb230ab4f31d70f2f6114db6043281e26fa88a
138 Risk Score

Malware Insights

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

The PDF file exploits CVE-2010-0188, a vulnerability in Adobe Reader related to LibTIFF XFA image parsing. The presence of XFA forms and embedded script payloads indicates an attempt to execute arbitrary code. The embedded script likely downloads and executes a second-stage payload, although the exact script content is truncated. The embedded URLs are related to XFA schema definitions and do not appear to be malicious themselves.

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
3ff7a82940e863fe0da1835a18f07a83c8a18520aeb60c0ea77057661bdf7a44		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101555 bytes

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