Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a2c78db618ae46d…

MALICIOUS

PDF

99.7 KB
MD5: 07fc4c8e4a5c2b60cc5c6150e918dd45 SHA-1: 47777dc07a676fa1313f229af8eebcd87d143c3c SHA-256: 5a2c78db618ae46de33848199e147dec62f9b2be687079d3bcd0a120cdf8cb05
116 Risk Score

Malware Insights

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

The PDF sample contains an embedded script payload and triggers the CVE-2010-0188 exploit, indicating it is designed to execute arbitrary code upon opening. The ML classifier strongly flags this PDF as malicious. While no specific family is identified, the exploit and embedded script suggest a downloader or dropper functionality.

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
900a2da60157a755dbddc0f07c31e4383475d9aad332b585be379cc477a3cd0b
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101390 bytes