PDF malware analysis — malicious · c4f2ed1f2708d126

MALICIOUS

PDF

11.7 KB

MD5: 1f70626f1d11a299dd812578daf7a296 SHA-1: a18449f64752650a1f0c0cde108405b488c41e1e SHA-256: c4f2ed1f2708d126dd0b70e3c681eee2f077bc8598ab7dd02f862b74c43cb058

128 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1566.002 Spearphishing Attachment

The PDF was flagged by multiple heuristics, including ML classification and ClamAV detection as 'Pdf.Exploit.Dropped-78'. It contains an embedded file and an embedded script payload, indicating it is designed to deliver a secondary malicious artifact. The specific exploit or payload is not detailed in the provided evidence, but the presence of these components strongly suggests a malicious intent to exploit vulnerabilities and execute further malicious code.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 6

ClamAV: Pdf.Exploit.Dropped-78 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Dropped-78
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.
Embedded file low PDF_EMBEDDED

PDF embeds a file attachment — could carry an executable or another weaponised document as a nested payload
XFA form low PDF_XFA

PDF uses XML Forms Architecture — can contain script logic
Suspicious extracted artifact info EXTRACTED_FILE_STATIC_TRIAGE

One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
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://ns.adobe.com/xdp/
- http://www.xfa.org/schema/xfa-template/2.5/
- http://www.xfa.org/schema/xfa-data/1.0/

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`embedded_file_obj0008.bin` `92331f1934096488851fa03ac6b30112116d2649494c64bcf831e1b2f2ed1778`	pdf-embedded-file	PDF EmbeddedFile object 8 at offset 0xC8	11195 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).

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