Malicious PDF — malware analysis report

Static analysis result for SHA-256 685a436215a96f7c…

MALICIOUS

PDF

13.0 KB
MD5: 6b1a2075c4b5c6fb03b00edb7af643f6 SHA-1: 0ae653ac772fd4d85b21de90d95a4077be852249 SHA-256: 685a436215a96f7c8cd7c23e127bf52bfff540f82c509b1d43be126712bb3611
116 Risk Score

Malware Insights

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

The PDF sample contains critical heuristic firings indicating exploitation of CVE-2010-0188 via XFA forms. This vulnerability allows for arbitrary code execution, which is often used to download and execute further malicious content. No specific family could be identified, but the exploit vector is clear.

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/
    • http://ns.adobe.com/xdp/\

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_file_obj0009.bin
3475bfe94d6cafef47b32c8c738f36981a0d3e4bca0720ec6f12b758c451cb5f
pdf-embedded-file PDF EmbeddedFile object 9 at offset 0xD5 12539 bytes