PDF static analysis report

Static analysis result for SHA-256 7189c44aba0eb20f…

SUSPICIOUS

PDF

7.5 KB Created: 2012-07-24 18:55:36
MD5: fbf49a46dcc3a96a2a9407a1d2ddf1e9 SHA-1: 01fda70725b588efc1979daf14fe760bd7af7b91 SHA-256: 7189c44aba0eb20fae4de85f9a4fa4d25e933af80be758353597be61ee632175
58 Risk Score

Malware Insights

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

The sample is a PDF file flagged by a machine learning classifier as malicious. Heuristics indicate the presence of an embedded script payload and an embedded file, suggesting an attempt to exploit a PDF vulnerability for initial execution. The embedded file 'embedded_file_obj0011.bin' is a primary indicator of compromise.

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_obj0011.bin
6340aa605a3a782057a570082be93bb78e43ffaca26f5580b1357b8be0909e7d		 pdf-embedded-file PDF EmbeddedFile object 11 at offset 0xBA4 7053 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 4 long base64-like blob(s).

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