Malicious PDF — malware analysis report

Static analysis result for SHA-256 a7569a8de84d85ce…

MALICIOUS

PDF

42.4 KB
MD5: 1794ef06b4a80945a9a860c506b41a14 SHA-1: 988f6031ea3cf954bb61663c72db83f20ddc9592 SHA-256: a7569a8de84d85ce803e60fc8eee191d9610179e43701b825bc3aaf53ead4b59
188 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1566.001 Spearphishing Attachment

The file is a PDF document flagged by multiple heuristics as malicious, including a critical ClamAV detection for 'Pdf.Exploit.Agent-36830'. The PDF contains embedded files and an embedded script payload, indicating it's designed to exploit vulnerabilities and deliver further malicious content. The ML classifier also strongly indicates maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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/

Extracted artifacts 6

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
655c405c2dca9b4e4fc44adf2345761e6276eeedafeee56e2a1bda0c06e4102d		 pdf-embedded-file PDF EmbeddedFile object 9 at offset 0x14D 689 bytes
embedded_file_obj0010.bin
0fe7596619d7974f48bb0928a6efec8cf5bea691a6bfb71cb5fbc41c3ca73638		 pdf-embedded-file PDF EmbeddedFile object 10 at offset 0x449 168 bytes
embedded_file_obj0011.bin
83dc7ec8f7db2ac77f85db00c62ff8254c8da3fc2dfd842d42f6a8fcce37b6f3		 pdf-embedded-file PDF EmbeddedFile object 11 at offset 0x53C 424 bytes
embedded_file_obj0012.bin
d2f06f3fc6900856fe613a64a561919c8454dcbe0fdf238fb8b43e07016955ea		 pdf-embedded-file PDF EmbeddedFile object 12 at offset 0x72F 190 bytes
embedded_file_obj0014.bin
60e0798c716782f819b86f9ffff4b1b9f94ae93be4700b05f07824e0e1cd64af		 pdf-embedded-file PDF EmbeddedFile object 14 at offset 0x83A 40607 bytes
Detection
ClamAV: Pdf.Exploit.Agent-36830
Obfuscation or payload: unlikely

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