Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f57dfceaa2aaff6…

MALICIOUS

PDF

99.9 KB
MD5: cc63c813ed0574dadbc147b545c7c691 SHA-1: c5a17c55e4b8ea6782384655f4075333b2c3ed03 SHA-256: 7f57dfceaa2aaff615c3468a9abcb5db4abc97931c33a5da23953baa12b15253
116 Risk Score

Malware Insights

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

The sample is a PDF file identified as malicious by an ML classifier. Static analysis detected the CVE-2010-0188 exploit targeting Adobe Reader's XFA forms, indicating an attempt to achieve client-side code execution. The presence of an embedded file and script payload further supports this, suggesting the exploit is used to download and execute a secondary stage. No specific family could be identified.

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
6224807be7419aab0d87676b4504abc199aed68ba61508109239cf6a6c4e7edc		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101533 bytes

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