Malicious PDF — malware analysis report

Static analysis result for SHA-256 176ab97b538e03f8…

MALICIOUS

PDF

99.9 KB
MD5: 817b675d4c15e74a63b1cc53c0d9f73a SHA-1: 036fdd1fddf93827b2dcfb4608aea7e256b69d2e SHA-256: 176ab97b538e03f8d1fff1331fcaaf7d80abab2b6f837c854fe9cbc363fc98f4
116 Risk Score

Malware Insights

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

The PDF file exploits CVE-2010-0188, a vulnerability in Adobe Reader's handling of XFA forms, to achieve code execution. The presence of embedded file and script markers, along with a high ML classifier score, strongly indicates malicious intent. While the document body is truncated and contains no clear lure, the exploit itself is the primary indicator of compromise.

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
ddb1ec1da823f7d77c1e5fa811b75e8f86d4ce6e38f8f6c41a9e47682007eedb		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101526 bytes

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