PDF malware analysis — malicious · e1507e77070ebc9b

MALICIOUS

PDF

18.3 KB

MD5: 987f2f1259ee8beb3983f0f46eb14bd4 SHA-1: 60cabe606fe2c28335b552a5c5a152a7f7a6eca3 SHA-256: e1507e77070ebc9bba0836a2abcf1851fa6d371ad09ba0a68c2bc3e124473906

178 Risk Score

Malware Insights

MITRE ATT&CK

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

The PDF file contains an embedded script payload and was flagged by multiple detection engines, including ClamAV, as malicious. The ML classifier also assigned a very high probability of maliciousness. The presence of an XFA form suggests a complex document structure often used for exploitation. The embedded script is likely responsible for downloading and executing a secondary payload, as indicated by the ClamAV detection on an extracted artifact.

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` `49a651987abbd93e6582830867794b9d29b4453e0b9e1a1996faf886722c560d`	pdf-embedded-script	PDF raw stream script payload at offset 0x329	18014 bytes
Detection ClamAV: Pdf.Exploit.Agent-36809 Obfuscation or payload: unlikely

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