PDF malware analysis — malicious · b3781d5b7c319ebf

MALICIOUS

PDF

11.7 KB

MD5: 427525889c075cfce6666ba8536880d3 SHA-1: 93057172406bd14bbdbe6dc62f84f400990a79cb SHA-256: b3781d5b7c319ebf5d79aba5a02c16a07c2e1ae6b1aa92eca6230e5078999acf

96 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1566.001 Spearphishing Attachment

The PDF file contains an embedded script payload, as indicated by the 'PDF_EMBEDDED_SCRIPT_PAYLOAD' heuristic. ClamAV detection 'Pdf.Exploit.Dropped-78' further confirms its malicious nature. The embedded file suggests a dropper or exploit delivery mechanism. The presence of XFA form elements and embedded files points towards a crafted exploit document.

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` `02c0e7d4e9101474970fb5d59b26940d329e93f8132dc7218bf32d798a803c7a`	pdf-embedded-file	PDF EmbeddedFile object 8 at offset 0xC8	11228 bytes

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