Pdf.Dropper.Agent-9448462-0 — PDF malware analysis

Static analysis result for SHA-256 64c0997539aab974…

MALICIOUS

PDF

9.3 KB Created: 2011-01-09 22:48:12 Authoring application: mud run
MD5: 08e251c24a82fdb0b6fb297e23a68557 SHA-1: 63217f4b928624d697ce3115967748089febd5eb SHA-256: 64c0997539aab97427ea6f64cfe4a8ed19b66ae3c9bb231f66ccb8ef74a9d556
198 Risk Score

Malware Insights

Pdf.Dropper.Agent-9448462-0 · confidence 95%

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

This PDF file contains XFA forms and embedded scripts, which are often used to exploit vulnerabilities for client execution. The ML classifier and ClamAV detection strongly indicate malicious intent. The embedded script likely downloads and executes a secondary payload, as suggested by the 'Pdf.Dropper.Agent' ClamAV signature and the presence of a large embedded file.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 8

  • XFA form contains risky executable script high CVE related PDF_XFA_SCRIPT
    PDF embeds an XFA form whose script block contains exploit, submission/launch, or shell-execution primitives. Ordinary LiveCycle print/update scripts are left as generic XFA/JS signals unless stronger behavior is present.
  • ClamAV: Pdf.Dropper.Agent-9448462-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-9448462-0
  • unescape() call high PDF_UNESCAPE
    unescape() found — often used to decode shellcode in PDF JS exploits (matched inside decoded stream)
  • 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://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/
    • http://www.xfa.org/schema/xfa-template/2.5/

Extracted artifacts 7

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_file_obj0015.bin
d81baa73e490e4cb879e13927cacd1dd1be37524a37eac51603e15117c578777		 pdf-embedded-file PDF EmbeddedFile object 15 at offset 0x96A 84 bytes
embedded_file_obj0001.bin
24c130f03a4cf51d470b536e94c1e58af67665739e200e0ce198ad41086243c0		 pdf-embedded-file PDF EmbeddedFile object 1 at offset 0xA1B 228 bytes
embedded_file_obj0002.bin
c97e0522381d6196cc0695f35f4d065f15c9c86a9601a7f776c6afd3f4c6b460		 pdf-embedded-file PDF EmbeddedFile object 2 at offset 0xB0B 199 bytes
embedded_file_obj0003.bin
170cda10c0377caf9b9e508602b192fbae5abf2e5908c62c8ea7361efd332f12		 pdf-embedded-file PDF EmbeddedFile object 3 at offset 0xBFB 119 bytes
embedded_file_obj0012.bin
e6c26a3478346d27e841ad49868ebf68bf4c6863b6750e8d60bda3c4c6f79876		 pdf-embedded-file PDF EmbeddedFile object 12 at offset 0xCB3 77 bytes
embedded_file_obj0011.bin
92a3ce61d783e15932b5de127ce45a9b4c2f98f4da2453f65241573c1dda808a		 pdf-embedded-file PDF EmbeddedFile object 11 at offset 0xD5A 56 bytes
embedded_file_obj0008.bin
f045b19601dff8a7652ca8492cec8c7ef6df2c9c963e746a6abaa028d6f380f1		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0x1092 85227 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 1 eval/decoder/string-building token(s).

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