PDF malware analysis — malicious · 1d3770698feb0146

MALICIOUS

PDF

11.7 KB

MD5: 99e0c84808ba2fd99fe0ae9685efd91b SHA-1: 0ce541d8792e9b7fa231d3e6aa09cdc24faeeedf SHA-256: 1d3770698feb01465be475e669203a98af8966ee07c8ec1c9b4a28f29bdee3e7

128 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1566.002 Spearphishing Attachment

The PDF was flagged by multiple heuristics, including a critical ClamAV detection (Pdf.Exploit.Dropped-78) and a high ML score, indicating it contains malicious content. An embedded file and script payload were identified, suggesting the PDF is designed to exploit vulnerabilities and drop a secondary payload. The embedded file 'embedded_file_obj0008.bin' is a primary indicator of malicious activity.

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` `6c50643ed7f7a941a92e51de1661f7e5e64402eb766bdd5ad0b1848912198f08`	pdf-embedded-file	PDF EmbeddedFile object 8 at offset 0xC8	11246 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).

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