Malicious PDF — malware analysis report

Static analysis result for SHA-256 630d053b4c6aacb4…

MALICIOUS

PDF

99.6 KB
MD5: f183c42499bfca55b6ef9af692dace24 SHA-1: 856efeedc8b4b8188d7e988a2eed9ec028d19458 SHA-256: 630d053b4c6aacb4ead5970d47ad862aec4f0c51cf2c8457796b0568fa416b57
116 Risk Score

Malware Insights

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

The sample is a PDF file identified as malicious by a machine learning classifier. It exploits CVE-2010-0188, a known vulnerability in Adobe Reader related to XFA forms, to achieve code execution. The presence of an embedded file and script payload further supports its malicious nature, likely as a dropper for further stages.

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
c2522ebefec499727e0930e181f47115812729ee85eca678af4b942adc5d4f03
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101268 bytes