Malicious PDF — malware analysis report

Static analysis result for SHA-256 5561b2a0fa64c0f8…

MALICIOUS

PDF

65.8 KB
MD5: fb914332df2b42dd742afbb6b5abf02d SHA-1: b3444e9cdaca8afacb11a6a1db233607e69f892f SHA-256: 5561b2a0fa64c0f816ef5abfd00cb53175d3f9d9ed1d01f8cad76f1e2f051b28
136 Risk Score

Malware Insights

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

The PDF file contains embedded XFA (XML Forms Architecture) data, which is exploited by CVE-2010-0188, a known vulnerability in Adobe Reader. This exploit allows for the execution of arbitrary code. The embedded script payload within the XFA form further indicates malicious intent, likely to download and execute a secondary payload. No specific family could be identified, but the exploit vector is clear.

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
b192d09cc6c93515bb55f91b7ac2c1881a82374ac59eae8a0bee5c51b40711d3		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 66586 bytes

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