PDF malware analysis — malicious · 92d0f8411aa65b3c

MALICIOUS

PDF

18.3 KB

MD5: f56ef2fc465b73d4b8cacd2f68a31c8f SHA-1: 983b6e6763bcb3eb6a7d8ca671328cb7e02a1683 SHA-256: 92d0f8411aa65b3c010dda799402d4aac6757e98fa32526f82802d2a251a7818

178 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: User Execution: Malicious File T1566.002 Phishing: Spearphishing Attachment

The PDF utilizes XFA forms and contains an embedded script payload, strongly indicating malicious intent. ClamAV detections further confirm this, identifying it as Pdf.Exploit.Dropped-78 and an extracted artifact as Pdf.Exploit.Agent-36809. The embedded script is likely responsible for downloading and executing 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
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.
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://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_00000329.bin` `d7c8dd7d46d561823c191452a59bbfe4bf77f2366dfb1af6808a06eb639e28fe`	pdf-embedded-script	PDF raw stream script payload at offset 0x329	18045 bytes
Detection ClamAV: Pdf.Exploit.Agent-36809 Obfuscation or payload: unlikely

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