PDF malware analysis — malicious · aeb59883e1621a09

MALICIOUS

PDF

14.7 KB

MD5: f746f56feb3023c269e93cb45cfa2904 SHA-1: 364975f03df1ec4bf7cb0c327da9e375914d0f6c SHA-256: aeb59883e1621a09dd7d5a61d13c61bb8e5577a14d3b821ed405ad241614840d

178 Risk Score

Malware Insights

MITRE ATT&CK

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

The PDF file was flagged by multiple high-confidence heuristics, including ML classification and ClamAV detections indicating it is a malicious exploit dropper. An embedded script payload was identified, suggesting the PDF is designed to execute malicious code upon opening. The embedded URL, while benign in reputation, is present within the document 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
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` `eee0a880e99de5c20bf81eb9ab87ed21d09af97e33084363334c3cbeef3cf59a`	pdf-embedded-script	PDF raw stream script payload at offset 0x329	14303 bytes
Detection ClamAV: Pdf.Exploit.Agent-36809 Obfuscation or payload: unlikely

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