Malicious PDF — malware analysis report

Static analysis result for SHA-256 151a3fbe9a0e0047…

MALICIOUS

PDF

100.1 KB
MD5: 058b4d477a54c260ab3a89f3c7639e95 SHA-1: 66bb6e87960984bb1834c404d0a29e1c62673e3e SHA-256: 151a3fbe9a0e00473966b798938db1bd6b86947ff7aa1ed03ea2bd0d928c35c0
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 that exploits CVE-2010-0188, a known vulnerability in Adobe Reader's LibTIFF component. This exploit allows for arbitrary code execution upon opening the document. The presence of an embedded script payload further supports the 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
4a67c6bd23a219e2bb3f401ac154e898a51ceefedf01f8eb49343ab8e9919db4
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101743 bytes