Malicious PDF — malware analysis report

Static analysis result for SHA-256 b3275ad27d3003eb…

MALICIOUS

PDF

99.5 KB
MD5: 40a06518d4dd108cffeef360d82ed7f1 SHA-1: c306596fa777cd3af597bb3c40db495fcf62c4d2 SHA-256: b3275ad27d3003eb3dc66d3b901c5ee74178e6ae97bf3af59bc647a6e4d05a5f
136 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1059.001 PowerShell

The PDF file exploits CVE-2010-0188, a known vulnerability in Adobe Reader related to LibTIFF XFA image processing. This exploit is designed to execute arbitrary code, indicated by the 'PDF_XFA_SCRIPT' and 'PDF_EMBEDDED_SCRIPT_PAYLOAD' heuristics. The embedded script likely downloads and executes a secondary payload, although the script content itself was heavily obfuscated and truncated, preventing a more detailed analysis of its specific actions. The presence of an embedded file further supports the delivery of additional malicious components.

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
386678053757b1197ec5467fe2292fc05d02351e7ed8349914c243ab224ca8e6		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101158 bytes

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