Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e78e2fab0d0c741…

MALICIOUS

PDF

55.9 KB
MD5: de9396bb5e5f66b74df6310c9957be50 SHA-1: 71bc0782581e4df1ccf916627e6292547b9302a3 SHA-256: 6e78e2fab0d0c741f4b619573eb92bab30afb9b48804d3a341dd1def79d286db
156 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

The PDF file contains XFA forms and embedded scripts, triggering heuristics for CVE-2010-0188, an Adobe Reader LibTIFF exploit. This indicates the file is designed to exploit a client-side vulnerability for code execution. The embedded file and script suggest a downloader or dropper functionality, though the specific payload is not discernible from the static analysis.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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 risky executable script high CVE related PDF_XFA_SCRIPT
    PDF embeds an XFA form whose script block contains exploit, submission/launch, or shell-execution primitives. Ordinary LiveCycle print/update scripts are left as generic XFA/JS signals unless stronger behavior is present.
  • 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 script payload in PDF stream low 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 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
5e736f460a9f8d7ef438175e98826e6fbd0f5171fca7ce85ad5c03857561ac90		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 56523 bytes

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