Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c44f93da96bd319…

MALICIOUS

PDF

100.0 KB
MD5: 402e41831fde9506ad2a2d9c36fbf827 SHA-1: d67551e050cfec1be60e6c171b165c9051765897 SHA-256: 7c44f93da96bd319e9f6e134dba991c11d95c29e3c597e0c302101222c59b906
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 execute a payload. The ML classifier strongly indicates malicious intent. While the document body and embedded scripts were not fully analyzed, the critical heuristic confirms the exploitation of a known vulnerability for client execution, 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
6d02e61a13428fa58865bee984f2dea66b7393b9d4311a4c85087c26db2e861b		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101618 bytes

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