Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0401241aac0fd30…

MALICIOUS

PDF

42.6 KB
MD5: 74ccf14d10006bf732d87eaffcc7909f SHA-1: f95e52e36830712a2e88052628ceef8d1699ff96 SHA-256: b0401241aac0fd30346fc9faeab04d55607aafdbf3be98476a06aa1727023c20
196 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1059.001 PowerShell

The PDF file contains critical heuristic firings for XFA forms with risky executable scripts and embedded script payloads. ClamAV detection confirms this as Pdf.Exploit.Agent-36830, indicating it's a known exploit. The embedded artifacts and XFA script suggest the PDF is designed to execute malicious code, likely to download and run a second-stage payload.

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
0feda8bfa0ba18b0392053fe56ca95ca36a9257b6edb95123c5737665879f87e
pdf-embedded-file PDF EmbeddedFile object 9 at offset 0x14D 689 bytes
embedded_file_obj0010.bin
97314d9231379623057a8a77eeb79f9354bacffa50753a0f63b9e87e8d67dbf2
pdf-embedded-file PDF EmbeddedFile object 10 at offset 0x449 186 bytes
embedded_file_obj0011.bin
27195cdbdd22d69d542c69b2683716a4b6e4a4aab83b44f6665ae707bd5bbebc
pdf-embedded-file PDF EmbeddedFile object 11 at offset 0x54E 376 bytes
embedded_file_obj0012.bin
d2f06f3fc6900856fe613a64a561919c8454dcbe0fdf238fb8b43e07016955ea
pdf-embedded-file PDF EmbeddedFile object 12 at offset 0x711 190 bytes
embedded_file_obj0014.bin
372fe7042131a8be380cc2ea374cdd5c4565527cb61a4020bf96c55745b4d2b8
pdf-embedded-file PDF EmbeddedFile object 14 at offset 0x81C 40775 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 0xA7AD 68 bytes