Pdf.Exploit.Agent-36830 — PDF malware analysis

Static analysis result for SHA-256 1e50f05867b3bca9…

MALICIOUS

PDF

42.6 KB
MD5: 8a54b938ef6bd7dcf86b90a07f55fe5e SHA-1: 6123c37dd81807c7554029fcc7ab1cabab606e8e SHA-256: 1e50f05867b3bca9c58d6f91174019b3ce9abd74509d8d19e413c060bb95ef25
196 Risk Score

Malware Insights

Pdf.Exploit.Agent-36830 · confidence 95%

MITRE ATT&CK
T1204.002 Malicious File: User Execution T1059.001 Command and Scripting Interpreter: PowerShell

The PDF file contains embedded XFA forms with risky executable scripts, as indicated by multiple high and critical heuristic firings. ClamAV detection confirms this as Pdf.Exploit.Agent-36830. The embedded scripts are likely designed to exploit vulnerabilities within the XFA processing engine, leading to the execution of malicious code. The embedded URLs, while mostly benign or unknown, are part of the document's structure and do not appear to be directly used for payload delivery in this analysis.

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-36830 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-36830
  • 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 script payload in PDF stream medium 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 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 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
88cd5c476054393479b588b8a9cefa81d9db195b64b201f7f565c04f3ef45cbf		 pdf-embedded-file PDF EmbeddedFile object 9 at offset 0x14D 687 bytes
embedded_file_obj0010.bin
97314d9231379623057a8a77eeb79f9354bacffa50753a0f63b9e87e8d67dbf2		 pdf-embedded-file PDF EmbeddedFile object 10 at offset 0x447 186 bytes
embedded_file_obj0011.bin
756bca41b5a82a965c898e608c6d8301606832460a5dbd49a24048b31680185d		 pdf-embedded-file PDF EmbeddedFile object 11 at offset 0x54C 384 bytes
embedded_file_obj0012.bin
d2f06f3fc6900856fe613a64a561919c8454dcbe0fdf238fb8b43e07016955ea		 pdf-embedded-file PDF EmbeddedFile object 12 at offset 0x717 190 bytes
embedded_file_obj0014.bin
529bebeef17ff62b51d694b9726a31b944b3226f2331cd463b426b77b6acfb0e		 pdf-embedded-file PDF EmbeddedFile object 14 at offset 0x822 40764 bytes
Detection
ClamAV: Pdf.Exploit.Agent-36830
Obfuscation or payload: unlikely
embedded_file_obj0015.bin
78b09463af5cd373870eae2e3e83de87b7f6b659e0d0117ab4c09d90ebb2ad95		 pdf-embedded-file PDF EmbeddedFile object 15 at offset 0xA7A8 68 bytes

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