Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c5a8f7549b54bb5…

MALICIOUS

PDF

79.1 KB
MD5: 5322073293739d15f4798ef0cde81e9d SHA-1: 9af8f3351866aedf8da21fd88407ed5c238b5df4 SHA-256: 6c5a8f7549b54bb5b6967adc0cc7858b41cbf062f549e346af487f039c5d3217
116 Risk Score

Malware Insights

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

This PDF file exploits the CVE-2010-0188 vulnerability in Adobe Reader's handling of XFA forms. The heuristic firings indicate an embedded script payload and an exploit targeting LibTIFF within XFA. This suggests the document is designed to deliver a second-stage payload upon opening in a vulnerable reader, likely distributed via spearphishing.

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
53959da8571515ee416fe34413be8075956e48f8c87997546c5a83df1b3b0e19		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 80276 bytes

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