Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e176e71a4edc5c4…

MALICIOUS

PDF

99.6 KB
MD5: 770c3c6dfa044f22ff3fa51e2b343e0b SHA-1: 63eb4fd2543ed29340e70489eb983a82dd403447 SHA-256: 0e176e71a4edc5c43e42d0b58057a928e1be47c58253e0d5e1ed3f57bf21b9ec
116 Risk Score

Malware Insights

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

This PDF file contains an embedded XFA form that exploits CVE-2010-0188, a known vulnerability in Adobe Reader's LibTIFF component. The exploit is designed to execute arbitrary code, and the presence of an embedded script payload suggests it is intended to download and run a secondary malicious payload. The ML classifier strongly indicates maliciousness.

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
db54d41a16a0e02392fd538bc3f0bc1918d729e7a91bb35088d303fbce693433		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101215 bytes

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