Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1f37fe90acbfbb7…

MALICIOUS

PDF

42.6 KB
MD5: f8ffcbffed6302508a968a8ab54f486d SHA-1: 2fa5c525028ff7a9c56cb95104947f47abbf62bd SHA-256: d1f37fe90acbfbb737070423e0c8edd080adb4d0141ca108a211fd790036c21e
186 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious File T1204.002 Malicious File: User Execution: Malicious Attachment

The file is identified as malicious by multiple heuristics, including ML classification and ClamAV detection (Pdf.Exploit.Agent-36834). The presence of embedded script payloads and embedded files strongly suggests that this PDF is designed to exploit vulnerabilities and deliver a secondary malicious payload. The specific exploit and payload are not detailed in the provided evidence, but the overall pattern indicates a malicious dropper.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • ClamAV: Pdf.Exploit.Agent-36834 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-36834
  • 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
04462f810d6eacdacecc9d0a5f3f81bebc722af4415e04da19b520338f642b51		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xD7 67 bytes
embedded_file_obj0009.bin
9e3c64c25cd6c1c44251027afe1f7a5cf58e94cb7b766a7ef4183dd3a645ee31		 pdf-embedded-file PDF EmbeddedFile object 9 at offset 0x162 690 bytes
embedded_file_obj0010.bin
1c5b7971dff586207e8235b49916e2677297f244f218ae7d19c6ac9623332af8		 pdf-embedded-file PDF EmbeddedFile object 10 at offset 0x45F 100 bytes
embedded_file_obj0011.bin
a0ed4852984e2059092cb9aeb9e4360da07e683d9fcb3b81e3d3fd53362645e0		 pdf-embedded-file PDF EmbeddedFile object 11 at offset 0x50E 586 bytes
embedded_file_obj0012.bin
d2f06f3fc6900856fe613a64a561919c8454dcbe0fdf238fb8b43e07016955ea		 pdf-embedded-file PDF EmbeddedFile object 12 at offset 0x7A3 190 bytes
embedded_file_obj0014.bin
0e9052f06a327cd89a828a2fee921effe84203fd74128681f4c6e79612b8738f		 pdf-embedded-file PDF EmbeddedFile object 14 at offset 0x8AE 40587 bytes
Detection
ClamAV: Pdf.Exploit.Agent-36834
Obfuscation or payload: unlikely
embedded_file_obj0015.bin
03172373f36e220deaea3baf69186e2a8bef99633879227f39b2a0b4510201ee		 pdf-embedded-file PDF EmbeddedFile object 15 at offset 0xA783 138 bytes

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