PDF malware analysis — malicious · 53cdcab59e5b663e

MALICIOUS

PDF

11.9 KB

MD5: abbc70ce374a46f198fec282b78ffd25 SHA-1: 21eca4c118467c8d7ce127566b2c7252a6b70bf0 SHA-256: 53cdcab59e5b663eb83cc768f210945e6ab155501a96356a5b842d1fdfad2420

126 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1566.002 Spearphishing Attachment

The critical ClamAV detection and high ML classifier score strongly indicate malicious intent. The PDF contains embedded script payloads and an embedded file, suggesting it's designed to exploit vulnerabilities and drop further malware. The embedded URLs, while not directly malicious, are part of the PDF structure.

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` `c33a48444cd9180cce65f1f52f7324e5f1defba097ebf020c1128de2e7f2bd82`	pdf-embedded-file	PDF EmbeddedFile object 8 at offset 0xC8	11454 bytes

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