Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a660d68d74b7e9a…

MALICIOUS

PDF

100.1 KB
MD5: 2ec379519980aa127103794994317090 SHA-1: a9102014c38e6cbcbb2d7adc3c0976ec56f2fee7 SHA-256: 5a660d68d74b7e9a430e66e388ff5a2f180ac215d5821f0be7f5f61d6de7ec53
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, specifically targeting XFA forms. The embedded script payload and the critical heuristic firing indicate that the file is designed to execute arbitrary code upon opening. While no specific family is identified, the exploit vector points to a malicious document likely delivered 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
d8170224df87d2064e7cdb5ff02263f09255cdcc5da26268e38fe871328938d0		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101715 bytes

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