Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6a909518ec36833…

MALICIOUS

PDF

4.2 KB First seen: 2013-07-12
MD5: 78fe9eb68fba8ace73a24546f51c244a SHA-1: aef8a4cd7d3b970b147527c3954f982c732c917f SHA-256: b6a909518ec3683301abddb32629f7fc26192bd96f5080518ad070ae62060b96
110 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File: User Execution T1553.005 Subvert Trust Controls: Mark-of-the-Web Bypass

The PDF file was flagged for containing an embedded script payload. This indicates the document is likely intended to execute malicious code when opened by a user. The presence of XFA forms and embedded files are common techniques used in PDF-based attacks to obscure or deliver malicious content.

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 info 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/1.0\ In PDF document text
    • http://www.xfa.org/schema/xfa-template/2.5/In PDF document text
    • http://www.xfa.org/schema/xfa-data/1.0/In PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_file_obj0008.bin pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xEA 12957 bytes
SHA-256: d93f9162629bb433607cf63f964fb862af44b9c47ad7fa5deddc62ae36f0b757

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