PDF malware analysis — malicious · d5c36d3ccbc74f13

MALICIOUS

PDF

123.7 KB

MD5: 5a18396e59ac3968a7d0f0ea4b2cfda3 SHA-1: 767f4174ebb517c89e3f4cec18325f78b014a36b SHA-256: d5c36d3ccbc74f13c537f7f8874eb5bc87edf077187c61cfd6d62e844f78fcd6

88 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1566.002 Spearphishing Attachment

The PDF file contains an embedded script payload within an XFA form, which is a known technique for delivering malware. ClamAV detection 'Pdf.Exploit.Dropped-78' further confirms its malicious nature. The embedded script is likely responsible for downloading and executing a second-stage payload, although its exact functionality is obscured by the PDF structure.

Heuristics 4

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.
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://www.xfa.org/schema/xfa-template/2.5/

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`embedded_pdf_script_00000329.bin` `933aaa42e911317fea9f99864bbf7210d77a8a4e065c219e6655b9cad149e15d`	pdf-embedded-script	PDF raw stream script payload at offset 0x329	125945 bytes

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