Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ab7ffaa4042976b…

MALICIOUS

PDF

99.8 KB
MD5: 8e4c75f533bef40fd27f91c77b8ca535 SHA-1: 1fd5ed2249491aea3a570c001359ea75cb137aeb SHA-256: 5ab7ffaa4042976b6194622dfce5f8a70ef895d8a9c106c3f9bf91f1e3e195f3
116 Risk Score

Malware Insights

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

This PDF document exploits the CVE-2010-0188 vulnerability in Adobe Reader's handling of XFA forms. The embedded script payload, likely a second-stage downloader, is triggered by this exploit. The ML classifier strongly indicates malicious intent, and the embedded file suggests a payload delivery mechanism.

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
ae375bab6fea8e1c9e44023fdd8f7f2893b6f4b615a6f3d72704b0ad7f32a645
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101433 bytes