PDF malware analysis — malicious · 026049dd7fb0298b

MALICIOUS

PDF

14.7 KB

MD5: 1b91727e9213fc5a469fe8e4dc4c2021 SHA-1: 7c3e3760138a24601f9a6c31cd282eecbd78948f SHA-256: 026049dd7fb0298bc8e1a25debb17e5dea42cdefd98541ac0ad007bc89437270

168 Risk Score

Malware Insights

MITRE ATT&CK

T1059.007 JavaScript T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

This PDF file was flagged as malicious by multiple engines, including a high-confidence ML classifier and ClamAV. It contains embedded JavaScript within an XFA form, a common technique for exploiting PDF vulnerabilities. The embedded script, though truncated, likely attempts to download and execute a secondary payload, as indicated by the ClamAV detection name 'Pdf.Exploit.Agent-36809'. The presence of an embedded script and the exploit nature suggest a spearphishing attachment delivery method.

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.
XFA form low PDF_XFA

PDF uses XML Forms Architecture — can contain script logic
Embedded script payload in PDF stream low 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 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` `8b2069b86fb0e29622a7a1061355283aa9ca1ca0cffb6d417fce9297736d62ef`	pdf-embedded-script	PDF raw stream script payload at offset 0x329	14306 bytes
Detection ClamAV: Pdf.Exploit.Agent-36809 Obfuscation or payload: unlikely

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