Malicious PDF — malware analysis report

Static analysis result for SHA-256 16947b3415d69e6d…

MALICIOUS

PDF

42.6 KB
MD5: e26a443813ae15b5fdb58c0acb00a3d4 SHA-1: f896f812c3add08daf3ef371685d9340a0720393 SHA-256: 16947b3415d69e6df8a2b79d224d155c6c96d6ebbfadc01c8a602a266753f1ac
176 Risk Score

Malware Insights

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

The sample is identified as malicious by ClamAV and an ML classifier, indicating it's likely an exploit. The PDF structure contains embedded scripts and files, suggesting it's designed to deliver a secondary payload. The presence of 'Pdf.Exploit.Agent-36834' is a strong indicator of its malicious nature.

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 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
04462f810d6eacdacecc9d0a5f3f81bebc722af4415e04da19b520338f642b51		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xD7 67 bytes
embedded_file_obj0009.bin
a95f6f674973e84dba3646b0ac5332c20d0848b92f199f4775a1cd62217060a0		 pdf-embedded-file PDF EmbeddedFile object 9 at offset 0x162 686 bytes
embedded_file_obj0010.bin
1c5b7971dff586207e8235b49916e2677297f244f218ae7d19c6ac9623332af8		 pdf-embedded-file PDF EmbeddedFile object 10 at offset 0x45B 100 bytes
embedded_file_obj0011.bin
419c4f2e3db0074a172a3ae36b6ed19cf66ffae8f49214aa321a269100371615		 pdf-embedded-file PDF EmbeddedFile object 11 at offset 0x50A 567 bytes
embedded_file_obj0012.bin
d2f06f3fc6900856fe613a64a561919c8454dcbe0fdf238fb8b43e07016955ea		 pdf-embedded-file PDF EmbeddedFile object 12 at offset 0x78C 190 bytes
embedded_file_obj0014.bin
bcacbcb41f1b28f7671be9c0660899fb228bd923eb63a173c1351708465370e4		 pdf-embedded-file PDF EmbeddedFile object 14 at offset 0x897 40601 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 0xA77A 138 bytes

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