PDF malware analysis — malicious · 2cd59f6ee2f2393b

MALICIOUS

PDF

25.8 KB

MD5: b744eaf500a7a3742ecef569e7010b61 SHA-1: 7574c58e4e6572aaf8c38e1258687f057f954e69 SHA-256: 2cd59f6ee2f2393b0ef05fc64575fd10b366b9b9af1068d94514236f18ac3378

126 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1566.002 Spearphishing Attachment

The PDF was flagged by a machine learning classifier with high confidence and also detected by ClamAV as Pdf.Exploit.Dropped-78. The presence of an embedded script payload and an embedded file indicates an attempt to deliver a secondary exploit or malware. The XFA form structure is also a common vector for PDF exploits.

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` `478dfe939f45861ba139e6ca53c2fbb19bdebe488b0b4905d6295ef059702ec8`	pdf-embedded-file	PDF EmbeddedFile object 8 at offset 0xC8	25655 bytes

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