PDF malware analysis — malicious · d4dfd91561f9384d

MALICIOUS

PDF

63.8 KB

MD5: 50f05e75f8bfe1330c0ccc4c851b9945 SHA-1: 1dd640f9fce539a547b30afc085bd8fbb286c471 SHA-256: d4dfd91561f9384de5985fadf151085214ed9ceacfdf1c247847baf3238c1acd

118 Risk Score

Malware Insights

MITRE ATT&CK

T1204 Malicious Link T1204.002 Malicious File T1059 Command and Scripting Interpreter T1059.007 JavaScript/VBScript

The PDF file contains embedded scripts and an embedded file, indicated by the PDF_EMBEDDED and PDF_XFA_SCRIPT heuristics. The unescape() call suggests obfuscation, likely to conceal malicious JavaScript or other executable content. The embedded file, 'embedded_file_obj0008.bin', is a strong indicator of a secondary payload. The presence of XFA forms and embedded scripts points towards an attempt to exploit PDF viewer vulnerabilities.

Heuristics 7

XFA form contains risky executable script high CVE related PDF_XFA_SCRIPT

PDF embeds an XFA form whose script block contains exploit, submission/launch, or shell-execution primitives. Ordinary LiveCycle print/update scripts are left as generic XFA/JS signals unless stronger behavior is present.
unescape() call high PDF_UNESCAPE

unescape() found — often used to decode shellcode in PDF JS exploits
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` `972c11c8611a3899c2b1c7f5b6279e654b182b082153d20d668dda3001dfee95`	pdf-embedded-file	PDF EmbeddedFile object 8 at offset 0xC6	64566 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).

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