PDF malware analysis — malicious · a5b5f4d242987458

MALICIOUS

PDF

11.8 KB

MD5: 79e346b07204936da914c3175989a235 SHA-1: 8cd707825595598fc96a2331fdc2cb0e6061797f SHA-256: a5b5f4d2429874587dd320eeb0e27a4ab9e6c3b7fff76365e0ed83436654ad79

96 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1553.005 Mark-of-the-Web Bypass

The PDF contains an embedded script payload, as indicated by the PDF_EMBEDDED_SCRIPT_PAYLOAD heuristic. ClamAV also detected it as Pdf.Exploit.Dropped-78, suggesting it's a known exploit dropper. The embedded file and XFA form suggest a complex document structure likely used to conceal the malicious payload.

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` `bf8897f5cb971743c1820d856d9fa445328258927216683423f68b4319eee072`	pdf-embedded-file	PDF EmbeddedFile object 8 at offset 0xC8	11358 bytes

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