Malicious PDF — malware analysis report

Static analysis result for SHA-256 6149f8d9cb024dac…

MALICIOUS

PDF

7.2 KB Created: 2012-04-21 19:58:55
MD5: 154a3c91bad2399a6679aa33a1251077 SHA-1: 163887f4105879470712f275785997fdf899fe5b SHA-256: 6149f8d9cb024dac7de116ffdfdf918ea5e72fe0374a78906dbf20afc1ca2301
118 Risk Score

Malware Insights

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

The PDF file contains embedded script and is flagged by multiple heuristics and a machine learning classifier as malicious. It is also detected by ClamAV as Pdf.Exploit.Dropped-156969-1, indicating it likely exploits a vulnerability to drop a secondary payload. The embedded file artifact 'embedded_file_obj0006.bin' is a strong indicator of this behavior.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • ClamAV: Pdf.Exploit.Dropped-156969-1 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Dropped-156969-1
  • 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_obj0006.bin
8c6bb9c424e3c9acb98d1b44e7a55de3b42013a60c784ec93080749f226336a7		 pdf-embedded-file PDF EmbeddedFile object 6 at offset 0x9D0 7196 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 4 long base64-like blob(s).

Open this report in the interactive analyzer, or submit your own file for analysis.