Malicious PDF — malware analysis report

Static analysis result for SHA-256 a938e34886bad82a…

MALICIOUS

PDF

99.9 KB
MD5: f15a9e3a8f5f49f2dacabc50c4887799 SHA-1: d49b7ded731cf8db427a3a162dd4344a3a121c27 SHA-256: a938e34886bad82a6b7ed18fa6c709197e3e5529cbe03b1ab9f41034bc86abab
138 Risk Score

Malware Insights

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

The PDF file exploits CVE-2010-0188, a vulnerability in Adobe Reader's LibTIFF component related to XFA forms. This exploit allows for arbitrary code execution. The presence of embedded scripts and an embedded file further indicates malicious intent, likely to download and execute a second-stage payload. The specific exploit and lack of clear indicators for a known family lead to an 'unknown family' classification.

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
c1952af91f5ad10197196cbd3cb0161462ceb52e30639be89f07f54c45e6bebe		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101528 bytes

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