Malicious PDF — malware analysis report

Static analysis result for SHA-256 412e559a623949a0…

MALICIOUS

PDF

42.3 KB
MD5: 49836ff11a580ad603d9ba0a2ec64fe7 SHA-1: 00005369722711b9e20062b9ebe9fb007715f806 SHA-256: 412e559a623949a065a047d2bf298175a5176e4694ea1a70b70903cf98eaa25d
156 Risk Score

Malware Insights

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

The PDF file was detected by ClamAV as Pdf.Exploit.Agent-36830, indicating it contains known exploit code. It also contains an embedded script payload and an embedded file, both common techniques for delivering malware. The embedded script is heavily obfuscated, making it difficult to determine its exact function, but the overall structure suggests it is designed to download and execute a second-stage payload.

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/xfa-template/2.5/
    • http://www.xfa.org/schema/xfa-data/1.0/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_file_obj0008.bin
b656137eaa5951566385596c6735ad85cf33cbea77f7fc19f14af37b63cd0f2c		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 42603 bytes
Detection
ClamAV: Pdf.Exploit.Agent-36830
Obfuscation or payload: unlikely

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