PDF malware analysis — malicious · 21427492b4352132

MALICIOUS

PDF

11.8 KB

MD5: 707f004fa1983b7ab130379b0528ce1f SHA-1: c1be5256de0fadc59d72bf7a43fe41f08df3a348 SHA-256: 21427492b43521329548749c53ea9f88a51e6e3bd7665633014cc17c0c657030

98 Risk Score

Malware Insights

MITRE ATT&CK

T1204 Malicious File T1204.002 Malicious File: User Execution: Malicious Attachment

The PDF contains an embedded script payload and an embedded file, as indicated by the PDF_EMBEDDED_SCRIPT_PAYLOAD and PDF_EMBEDDED heuristics. ClamAV detection of 'Pdf.Exploit.Dropped-78' further confirms its malicious nature. The embedded file 'embedded_file_obj0008.bin' is likely the delivered payload. The XFA form and embedded nature suggest an exploit delivery mechanism.

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` `1239ea4d1836d300b9dcb1974bb0379058a8e8e9c2f8882af5a9862aa2624da7`	pdf-embedded-file	PDF EmbeddedFile object 8 at offset 0xC8	11332 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).

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