PDF malware analysis — malicious · a4305decb1beb2d1

MALICIOUS

PDF

11.8 KB

MD5: 658cb80a03afe66b07df7e5d08cbccf9 SHA-1: bc5e89819532a9e2bcaab1560bcd947e1bca5a64 SHA-256: a4305decb1beb2d1ac93d186444a454bc9333ce9e74ed0fe01876ff7294d0c68

96 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1566.002 Spearphishing Attachment

The critical ClamAV heuristic indicates this PDF is a known exploit, specifically 'Pdf.Exploit.Dropped-78'. The PDF contains an embedded script payload, suggesting it is designed to download and execute a second-stage payload. While specific URLs were found, they were confirmed as benign or unknown, and no document body text was available for further context.

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.

Filename	Kind	Source	Size
`embedded_file_obj0008.bin` `0490523d51c0574915b2b9158d75b8825cb1b0b257e277aac36cfc033d72db55`	pdf-embedded-file	PDF EmbeddedFile object 8 at offset 0xC8	11335 bytes

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