Malicious PDF — malware analysis report

Static analysis result for SHA-256 6010b2289ed7ae48…

MALICIOUS

PDF

42.4 KB
MD5: e12b051516dc87337ffa08d4bcc68a56 SHA-1: 884e3b292844415e8e776815fff727e625f65869 SHA-256: 6010b2289ed7ae48763ad4f3454f4a61bba2ee7207c431dab3bb0d26fc707f36
216 Risk Score

Malware Insights

MITRE ATT&CK
T1059.007 JavaScript T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

The PDF file contains XFA forms with executable JavaScript, flagged by multiple high-severity heuristics. ClamAV detection confirms this as a malicious PDF exploit, likely Pdf.Exploit.Agent-36830. The embedded script is designed to exploit a vulnerability and execute a payload, which is a common technique for delivering malware via malicious documents.

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-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 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
15e58e267b62d5c29b5c9ad9360f56596607dac55bce7b17668190199636a350
pdf-embedded-file PDF EmbeddedFile object 9 at offset 0x14D 687 bytes
embedded_file_obj0010.bin
b9dc770324ae2a66fd1d9c8b9605e3a9ddaae9d1311dffe002d37a59fdc6e4bc
pdf-embedded-file PDF EmbeddedFile object 10 at offset 0x447 183 bytes
embedded_file_obj0011.bin
b81496c93278e59e66350202f1ac879f95083c5b6ef3c3a05a1a4af3669e6457
pdf-embedded-file PDF EmbeddedFile object 11 at offset 0x549 360 bytes
embedded_file_obj0012.bin
d2f06f3fc6900856fe613a64a561919c8454dcbe0fdf238fb8b43e07016955ea
pdf-embedded-file PDF EmbeddedFile object 12 at offset 0x6FC 190 bytes
embedded_file_obj0014.bin
48bdc1355e0d583a38a9788f6af9f50e0006bca86fa309dbbd2a4cc6c48ca81a
pdf-embedded-file PDF EmbeddedFile object 14 at offset 0x807 40589 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 0xA6DE 68 bytes