Malicious PDF — malware analysis report

Static analysis result for SHA-256 70fa9fd10f6dacd6…

MALICIOUS

PDF

99.8 KB
MD5: 384d94af61cf8296085baa57ec021070 SHA-1: e51aa1b24c83f94a2a3e358fa09a2ec767595da6 SHA-256: 70fa9fd10f6dacd64fc9eb9b38186cb5574744c2a37ad873078d622dc2cc03dc
116 Risk Score

Malware Insights

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

The PDF file contains an embedded XFA form and triggers the CVE-2010-0188 exploit, which is known to be used for arbitrary code execution. The ML classifier also strongly indicates maliciousness. No specific family could be identified, and no malicious URLs or scripts were directly extracted.

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
78ef4c0484d7712cbe9f24829128e5ff3fa313201e23cd41a8fb883a87326206
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101428 bytes