Malicious PDF — malware analysis report

Static analysis result for SHA-256 c1e4d9b6d82c2229…

MALICIOUS

PDF

19.2 KB
MD5: 68e39bc48ea2bd99397d25f5805cd749 SHA-1: c8c6ef45c7488bdcde794ce4a48bb6414518c4f1 SHA-256: c1e4d9b6d82c222919da485835645fc2e2e4860e410aae093e82a6ad5fd5d78d
96 Risk Score

Malware Insights

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

The PDF contains an embedded script payload, indicated by the 'PDF_EMBEDDED_SCRIPT_PAYLOAD' heuristic. ClamAV also detected it as 'Pdf.Exploit.Dropped-78', suggesting it's a known exploit dropper. The embedded file artifact further supports the delivery of a malicious payload. The exact nature of the payload is not discernible from the provided evidence, but the overall pattern points to a malicious PDF designed to exploit vulnerabilities or trick the user into executing embedded content.

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
94aac2d41bf5c80d20b26d5f154b1c105009f61fdd6d0c008874c9d2d8aaa2fa
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC8 18893 bytes