PDF malware analysis — malicious · d6dfa17f2c540c71

MALICIOUS

PDF

80.8 KB

MD5: b8a6028a8e7d7bcffc2b8dd0577f269d SHA-1: 5d6efd6ec6420c9e54aab3ab8edf990b6c633c31 SHA-256: d6dfa17f2c540c7151a9f072b252f1f08f3e8ab3a9b2a33b8f7891149845a3b7

186 Risk Score

Malware Insights

MITRE ATT&CK

T1204 Malicious File T1204.002 Malicious File: User Execution: Malicious Attachment

This PDF file was flagged by multiple high-confidence heuristics, including a machine learning classifier and ClamAV, indicating it contains an exploit. The 'PDF_EMBEDDED_SCRIPT_PAYLOAD' and 'EXTRACTED_FILE_CLAMAV' heuristics confirm that an embedded script or artifact was detected and identified as malicious. The ClamAV detection name 'Pdf.Exploit.Dropped-93' suggests the PDF is designed to drop and execute a secondary malicious payload.

Machine Learning

Nyx PDF Classifier malicious score 0.9997

Heuristics 6

ClamAV: Pdf.Exploit.Dropped-93 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Dropped-93
ClamAV detection on extracted artifact critical EXTRACTED_FILE_CLAMAV

ClamAV flagged at least one file extracted from inside this sample. Even when the wrapping document carries no AV detection of its own, a hit on the carved artifact is a strong indicator the sample is a delivery vehicle.
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/

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`embedded_pdf_script_00000374.bin` `b583698c5ce61908c311c69647adb8055c80dfb9c7682f6bcecc96bc4a353d10`	pdf-embedded-script	PDF decompressed stream script payload at offset 0x374	69679 bytes
Detection ClamAV: Pdf.Exploit.Dropped-93 Obfuscation or payload: unlikely

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