PDF static analysis report

Static analysis result for SHA-256 8035211cefb9770a…

SUSPICIOUS

PDF

7.2 KB Created: 2012-11-27 12:58:23
MD5: ea0c5724c39343872fdd0e8f7d5fc172 SHA-1: 7f461176ede9fb24127707908612a2e2e2571bbf SHA-256: 8035211cefb9770a81ee18f9007966b55ec9246791c9756bee7b035066f703d5
58 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1059.007 JavaScript

The PDF file contains heuristics indicating an embedded script payload and an embedded file, strongly suggesting an exploit attempt. The ML classifier output of 0.999987 further supports this assessment. While no specific script content is visible, the presence of an embedded file points towards the execution of a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Suspicious extracted artifact info EXTRACTED_FILE_STATIC_TRIAGE
    One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
  • 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/xci/1.0/
    • http://www.xfa.org/schema/xfa-template/2.5/
    • http://ns.adobe.com/xtd/
    • http://www.xfa.org/schema/xfa-data/1.0/
    • http://ns.adobe.com/xfdf/
    • http://www.xfa.org/schema/xfa-form/2.8/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_file_obj0007.bin
fa29c3d87c9c00b1c352d8399d4da7838de817c108969521645b3a8101e57e43		 pdf-embedded-file PDF EmbeddedFile object 7 at offset 0xACF 7093 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 4 long base64-like blob(s).

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