PDF malware analysis — malicious · 843d9ee43e108ecb

MALICIOUS

PDF

19.4 KB

MD5: adfcd9e8b96156b0eb91aef8ff584c17 SHA-1: b284dff8ec33439b3b6f33a2f69825438edbc916 SHA-256: 843d9ee43e108ecb3c797dcced962ec910408e9e734173992ed84ac19217c376

126 Risk Score

Malware Insights

MITRE ATT&CK

T1204 Malicious Link T1204.002 Malicious Link: Malicious File

The PDF was flagged by a machine learning classifier with high confidence and ClamAV detected it as a known exploit. The presence of an embedded script payload and an embedded file further indicates malicious intent. 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` `a3d249deb6f87057e82c9297ae306731bb3763064f7def152326f358b9d4b762`	pdf-embedded-file	PDF EmbeddedFile object 8 at offset 0xC8	19060 bytes

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