Malicious PDF — malware analysis report

Static analysis result for SHA-256 70582ef56047c88f…

MALICIOUS

PDF

78.8 KB
MD5: 791af08e662c3d855466ec44073a4aae SHA-1: 3e5c20e52111276cf2cf8c6537d90f228bf54c5c SHA-256: 70582ef56047c88f5e82e3b8dbda94ac5d56d774b026f419780c057a801d64ab
116 Risk Score

Malware Insights

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

The PDF sample contains an embedded exploit targeting CVE-2010-0188, a known vulnerability in Adobe Reader's handling of XFA forms. This exploit is designed to execute arbitrary code, which is typically used to download and run a secondary malicious payload. The ML classifier strongly indicates maliciousness, and the presence of an embedded exploit confirms a high likelihood of malicious intent.

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
962b0460690d2e5e83e11f4d0068db8cf99c37ac8f91c949a6b33a2248bfe7e1		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 79951 bytes

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