PDF malware analysis — malicious · 8b903e5248e7a875

MALICIOUS

PDF

11.7 KB

MD5: 4498906f2726b71709d3471e40101380 SHA-1: 21d0bb31fd936ffc1066f90133877c6cc22a4deb SHA-256: 8b903e5248e7a875ab48e32341d11caa6c9a8a4d5806cd25d5f2edfcd1cdd25a

96 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1566.001 Spearphishing Attachment

The critical ClamAV heuristic 'Pdf.Exploit.Dropped-78' strongly indicates this PDF is malicious and designed to exploit vulnerabilities. The presence of an embedded script payload further supports this, suggesting it's used to download and execute a secondary stage. While no specific family is identified, the attack pattern is consistent with exploit-based PDF delivery.

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` `c18a95fd0d300ebda041bda8bfa75f53b25d1bfe9bd6e41d1fcda977ff8fcbb7`	pdf-embedded-file	PDF EmbeddedFile object 8 at offset 0xC8	11224 bytes

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