Malicious PDF — malware analysis report

Static analysis result for SHA-256 1570eacdef6b8723…

MALICIOUS

PDF

7.9 KB Created: 2012-04-27 17:25:24
MD5: 1db400f319fd623bc002ec2602eec059 SHA-1: 3e3635b6f152e085d04a5042413ee1b9c011e480 SHA-256: 1570eacdef6b8723f381c86e4efebc5252756eb62ce369113e17a397c3a89288
118 Risk Score

Malware Insights

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

The sample is a PDF file flagged by multiple heuristics as malicious, including ML classification and ClamAV detection (Pdf.Exploit.Dropped-156969-1). It contains an embedded script payload and an embedded file, indicating it is designed to execute arbitrary code. The XFA form suggests a potential avenue for exploit, and the embedded file likely contains the secondary payload.

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_obj0010.bin
6b2c0a397ad164bf8a58f0436288eafd23acea5983738b3cce775a44f1e5e88d		 pdf-embedded-file PDF EmbeddedFile object 10 at offset 0xCB8 7237 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.