PDF malware analysis — malicious · 688bb49c75d2691f

MALICIOUS

PDF

19.3 KB

MD5: 568755b182f1b7d13b09cc9067608265 SHA-1: 2cf42d48694472b19539afbc198f14d6083b2593 SHA-256: 688bb49c75d2691fda6b169f3ffde266147fb859c7b9b9e6ee33832ba3b9131b

116 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

The file is identified as malicious by ClamAV with the signature Pdf.Exploit.Dropped-78, and a high ML score. It contains embedded content and XFA forms, indicating it is likely an exploit document. The embedded file suggests a dropper functionality, aiming to download and execute a second-stage 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 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 script payload in PDF stream low 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 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` `8aab47f79dcda7f6559c82a0b6dd2726c7075e999b00b1b1f1e2c15048849a6c`	pdf-embedded-file	PDF EmbeddedFile object 8 at offset 0xC8	18998 bytes

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