Malicious PDF — malware analysis report

Static analysis result for SHA-256 1092395f6574e0ab…

MALICIOUS

PDF

79.0 KB
MD5: 1e8ce744f197a7cb1bc81d4c91b63df8 SHA-1: 6978abb671c6a3f8c02cba6c1d4b758a25409b75 SHA-256: 1092395f6574e0abe20caa1f5332d84f6e021975e79dfe623cf74f02624acf1e
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 LibTIFF component. The exploit is embedded within an XFA form and is designed to execute arbitrary code, which is a common technique for downloading and running further malicious payloads. The ML classifier strongly indicates maliciousness, supporting the exploitation finding.

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
4910f04be3fbaf3de705b2f765fdddadd2dd6b53c904e0886479c65bb6673c10		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 80115 bytes

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