Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf14ddb177c43cb6…

MALICIOUS

PDF

79.1 KB
MD5: 55f654d01f3382fe7beb7655fab80be5 SHA-1: 24216905bde46c5eb5158176fa4de808aa5640a6 SHA-256: bf14ddb177c43cb6ef9dc02a27c8023a493cbb1816aa21ac351c846d81b70adb
148 Risk Score

Malware Insights

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

The PDF file utilizes XFA forms and contains an embedded script payload, as indicated by multiple critical heuristic firings including ClamAV detections for 'Pdf.Exploit.Agent-6136306-0' and 'Pdf.Exploit.Agent-36769'. The embedded script is likely responsible for delivering the malicious payload. The presence of XFA suggests an exploit targeting Adobe's form technology.

Heuristics 5

  • ClamAV: Pdf.Exploit.Agent-6136306-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-6136306-0
  • 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.
  • 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_pdf_script_0000023e.bin
10ec19bd9b5b2b47980562351af2c83c423a8a7cb92d2e503befaa940c2e0962		 pdf-embedded-script PDF raw stream script payload at offset 0x23E 80301 bytes
Detection
ClamAV: Pdf.Exploit.Agent-36769
Obfuscation or payload: unlikely

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