Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d69feb96e18e9e2…

MALICIOUS

PDF

12.2 KB
MD5: 5be034f7a6fed4d2646b14951eb46f57 SHA-1: 7a65fc5deb8e7b86b9d8b1e877fc293f8d6ad6ff SHA-256: 4d69feb96e18e9e2af2cf7f4afdeb1d0fde6f7764e62fbac1dd90c6801cf0013
96 Risk Score

Malware Insights

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

The PDF file contains an embedded script payload, as indicated by the 'PDF_EMBEDDED_SCRIPT_PAYLOAD' heuristic. ClamAV detection 'Pdf.Exploit.Dropped-78' further confirms its malicious nature. The embedded file and XFA form suggest a delivery mechanism for an exploit. The exact nature of the script's action is not fully discernible from the provided data, but its presence within an exploit-indicating PDF points to a malicious payload delivery.

Heuristics 5

  • ClamAV: Pdf.Exploit.Dropped-78 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Dropped-78
  • 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
965cc07ffe03964bba7fd22ddd3ec2d01cb0d61ee4265f1913144121e75ba009
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC8 11712 bytes