Malicious PDF — malware analysis report

Static analysis result for SHA-256 875ba78925106f42…

MALICIOUS

PDF

99.9 KB
MD5: d906b37de6e9bd0d3e2d008ad6158e4c SHA-1: d20797f85060c54045cff9a9f3bb4762fab781f9 SHA-256: 875ba78925106f426591cb71f8e372c989cb1c0a0744d93d573bc719179a2aed
116 Risk Score

Malware Insights

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

The PDF file exploits the CVE-2010-0188 vulnerability in Adobe Reader's LibTIFF component, as indicated by the critical heuristic firing. This exploit is designed to execute arbitrary code, likely as part of a spearphishing attachment campaign. No specific malware family was identified, but the exploit's nature points to a direct execution attack.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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
6abd4090f56f7bca7d8d8f49ec3b8a26fd3286a83494cadcb23daa757bba6403		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101574 bytes

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