Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9aed6f7c448d5a1…

MALICIOUS

PDF

42.6 KB
MD5: db362428649f328059b98b91f785342a SHA-1: 0f3f81c0b7eebb818ff0ad96470659f484d55332 SHA-256: c9aed6f7c448d5a123653d8f5dcdde85e3cde1c41d9e0a587bb676cbe110e00b
226 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1059 Command and Scripting Interpreter

This PDF file exhibits multiple high-severity heuristic firings, including PDF_XFA_SCRIPT and PDF_EMBEDDED_SCRIPT_PAYLOAD, indicating the presence of executable script content within an XFA form. ClamAV detection as 'Pdf.Exploit.Agent-36830' on both the primary file and an extracted artifact strongly suggests exploitation of a PDF vulnerability. The embedded script likely serves 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-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
8f0dfb51c1c728c3e3194c78006e381908f1603b47dfb04d8e8bbded5c3c5e4e		 pdf-embedded-file PDF EmbeddedFile object 9 at offset 0x14D 689 bytes
embedded_file_obj0010.bin
b9dc770324ae2a66fd1d9c8b9605e3a9ddaae9d1311dffe002d37a59fdc6e4bc		 pdf-embedded-file PDF EmbeddedFile object 10 at offset 0x449 183 bytes
embedded_file_obj0011.bin
fa5a15647ce8b900003510a7464c7e33f47ca59c46e82c6aa02f0537616b3acb		 pdf-embedded-file PDF EmbeddedFile object 11 at offset 0x54B 370 bytes
embedded_file_obj0012.bin
d2f06f3fc6900856fe613a64a561919c8454dcbe0fdf238fb8b43e07016955ea		 pdf-embedded-file PDF EmbeddedFile object 12 at offset 0x708 190 bytes
embedded_file_obj0014.bin
ba9d9b1ce42a9e6e534c71a71f507dd25b1a47d5859fc80e54230d662e41995b		 pdf-embedded-file PDF EmbeddedFile object 14 at offset 0x813 40770 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 0xA79F 68 bytes

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