Malicious PDF — malware analysis report

Static analysis result for SHA-256 55b099e3292e8fa3…

MALICIOUS

PDF

42.8 KB
MD5: 6d452ba112a7174be5530b57099cc676 SHA-1: 3081d27a8b4698f6c997c7c02cadcc7756a822c0 SHA-256: 55b099e3292e8fa39226cb259410506b0a4a8d41f4c331079a29d8260be75054
156 Risk Score

Malware Insights

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

The file is identified as a malicious PDF by ClamAV with the signature Pdf.Exploit.Agent-36834. Static analysis revealed embedded files and scripts within the PDF structure, indicating an attempt to exploit vulnerabilities and deliver a payload. The presence of PDF_EMBEDDED_SCRIPT_PAYLOAD and EXTRACTED_FILE_CLAMAV heuristics further supports this conclusion.

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
0dab5970a74d68b2233e4ddaf3f752e84b8d61de9d94e394d3f93787fd2198a7		 pdf-embedded-file PDF EmbeddedFile object 9 at offset 0x162 688 bytes
embedded_file_obj0010.bin
1c5b7971dff586207e8235b49916e2677297f244f218ae7d19c6ac9623332af8		 pdf-embedded-file PDF EmbeddedFile object 10 at offset 0x45D 100 bytes
embedded_file_obj0011.bin
8786d38e3c16b16e977779c0fbb829083a9874257a41f695c3b92a061c95346b		 pdf-embedded-file PDF EmbeddedFile object 11 at offset 0x50C 587 bytes
embedded_file_obj0012.bin
d2f06f3fc6900856fe613a64a561919c8454dcbe0fdf238fb8b43e07016955ea		 pdf-embedded-file PDF EmbeddedFile object 12 at offset 0x7A2 190 bytes
embedded_file_obj0014.bin
c99e5bfc1d9bda1a2a1ecb2deddd60ee3f523d3f01371a55fa8e6e9df67a319c		 pdf-embedded-file PDF EmbeddedFile object 14 at offset 0x8AD 40832 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 0xA877 138 bytes

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