Malicious PDF — malware analysis report

Static analysis result for SHA-256 0861138521592d92…

MALICIOUS

PDF

79.2 KB
MD5: 7bdb86fc8265fc52ce152f0386111e20 SHA-1: 051401e8d7aaf2dc57570d19f2cfd3cda31e0133 SHA-256: 0861138521592d92bc93642cdff33a0cd9a4c50b662173a09d5a045b78e85266
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 XFA form processing. The heuristic firings indicate the presence of an embedded exploit payload within the XFA stream. This exploit is commonly used to achieve initial code execution, typically to download and run a second-stage malicious payload. The ML classifier strongly supports a malicious classification.

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
b54fe2d5d97ac92b16c488b7adf59c3fa0e284406fee404b363e000d82c8753b		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 80363 bytes

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