Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f11ecf57e9ec5dd…

MALICIOUS

PDF

42.6 KB
MD5: c8790031f5f435ada488653d0825e29c SHA-1: 39858accb311c880c9f34fc6b42cf742fa0f6dcc SHA-256: 6f11ecf57e9ec5dd08bef5b026bcb0bc5dbf07827d90b2bf18e86187efcf6104
216 Risk Score

Malware Insights

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

The PDF document contains XFA (XML Forms Architecture) which is known to be a vector for exploits. Heuristics indicate embedded script payloads and XFA forms with risky executable scripts. ClamAV detection confirms this is a known exploit, specifically 'Pdf.Exploit.Agent-36836'. The embedded script likely attempts to download and execute a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 7

  • 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.Exploit.Agent-36836 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-36836
  • ClamAV detection on extracted artifact critical EXTRACTED_FILE_CLAMAV
    ClamAV flagged at least one file extracted from inside this sample. Even when the wrapping document carries no AV detection of its own, a hit on the carved artifact is a strong indicator the sample is a delivery vehicle.
  • 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.
  • 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://www.xfa.org/schema/xfa-data/1.0/
    • http://ns.adobe.com/xfdf/
    • http://www.xfa.org/schema/xfa-form/2.8/

Extracted artifacts 7

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_file_obj0008.bin
0a2224c4023b216235b61c3fc4dd17bbfac1ab23a545687f51b97604cf654712		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xD7 46 bytes
embedded_file_obj0009.bin
36fd935499a8f1fc9b21f6e2ca367e51e26897b6a36c21569a00881bbdf6755b		 pdf-embedded-file PDF EmbeddedFile object 9 at offset 0x14D 688 bytes
embedded_file_obj0010.bin
9b3e3137f794b4b7749fdedcd46db5dc4d1f380440711c5edf7fc00a7458da87		 pdf-embedded-file PDF EmbeddedFile object 10 at offset 0x448 125 bytes
embedded_file_obj0011.bin
63fe61877ebe99d10fa3f23a444ab5e8a37d8d291855f2ed0bcb90be22c664f6		 pdf-embedded-file PDF EmbeddedFile object 11 at offset 0x510 403 bytes
embedded_file_obj0012.bin
d2f06f3fc6900856fe613a64a561919c8454dcbe0fdf238fb8b43e07016955ea		 pdf-embedded-file PDF EmbeddedFile object 12 at offset 0x6EE 190 bytes
embedded_file_obj0014.bin
4a520a64ed997c36ba6937af5f44f818927920de89038d531857edc13013f32c		 pdf-embedded-file PDF EmbeddedFile object 14 at offset 0x7F9 40824 bytes
Detection
ClamAV: Pdf.Exploit.Agent-36836
Obfuscation or payload: unlikely
embedded_file_obj0015.bin
78b09463af5cd373870eae2e3e83de87b7f6b659e0d0117ab4c09d90ebb2ad95		 pdf-embedded-file PDF EmbeddedFile object 15 at offset 0xA7BB 68 bytes

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