PDF malware analysis — malicious · b5ee05f3a558bb93

MALICIOUS

PDF

19.0 KB

MD5: 96ccebda976d8becaa6e2e5e3ff585c8 SHA-1: d43f5638b84d4d1b9a0701743a89f4e364ae24f9 SHA-256: b5ee05f3a558bb93fc02fc1cb080ef1312c3b97a80791a6fa665b2587699666b

126 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1566.002 Spearphishing Attachment

The file is a PDF identified as malicious by ClamAV and an ML classifier, indicating it likely exploits a vulnerability. The presence of an embedded script payload and an embedded file further supports its malicious nature. The PDF structure and embedded content suggest it is designed to deliver a secondary payload.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

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` `f917993b9321f044c00ede3124d7aa4fab73090e0cd794432d5e61d7f80d45b2`	pdf-embedded-file	PDF EmbeddedFile object 8 at offset 0xC8	18745 bytes

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