PDF malware analysis — malicious · 5ee5c49d241ea6ef

MALICIOUS

PDF

18.3 KB

MD5: a556772ce4b970924b1174bf66136f73 SHA-1: 7dff687736de86dac41c44cf4c186bedc841651e SHA-256: 5ee5c49d241ea6ef19c8c233b0a8911f911413524014484c1927660b37e9505a

168 Risk Score

Malware Insights

MITRE ATT&CK

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

The PDF file contains an embedded XFA form with a JavaScript payload. ClamAV detections indicate it's a known exploit that drops additional malware. The embedded script, although truncated, contains obfuscated JavaScript, likely intended to download and execute a second-stage payload, which is a common technique for initial compromise.

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` `49148276042ee5ad169643cc7b1e7963fe4b5f6d6d794929ebbf4eb3f31e29f8`	pdf-embedded-script	PDF raw stream script payload at offset 0x329	17985 bytes
Detection ClamAV: Pdf.Exploit.Agent-36809 Obfuscation or payload: unlikely

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