PDF malware analysis — malicious · db5b79cebfd6b004

MALICIOUS

PDF

19.3 KB

MD5: 491fb7cd3b55afd8d75a9d792e5994ab SHA-1: f97c9f66a3bbcb402489dcf4446b0776f02d4265 SHA-256: db5b79cebfd6b0048e4c673066fedc361f86b9edc30841d43a0d933dc1d556f8

96 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1566.002 Spearphishing Attachment

The file is a PDF document identified by ClamAV as Pdf.Exploit.Dropped-78, indicating it exploits a known PDF vulnerability. An embedded script payload was detected, suggesting it's designed to download and execute a second-stage payload. The presence of XFA form elements and embedded files further supports the exploit delivery mechanism.

Heuristics 5

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
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` `f432bdd48d1136ce716c2e6e54c58a4e27d009ce8d44bbbe2c07d867139bcf1a`	pdf-embedded-file	PDF EmbeddedFile object 8 at offset 0xC8	18964 bytes

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