PDF malware analysis — malicious · 31b178b027a23320

MALICIOUS

PDF

69.4 KB

MD5: 58f7619791ba40b0137ce1e8a2a7c683 SHA-1: 3c371a5ed841165b4797743ed218e8184f1b1fc8 SHA-256: 31b178b027a233202c5ecd7196d0e9826d7bc46e0274b74a0d691b272cad1f5f

118 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1059.001 PowerShell

The PDF file contains embedded script content and an embedded file, indicated by the PDF_EMBEDDED and PDF_XFA_SCRIPT heuristics. The unescape() call suggests obfuscation of malicious JavaScript. The primary attack vector appears to be exploiting a vulnerability within the PDF viewer to execute this script, which likely leads to the loading of the embedded file. The embedded file is a significant artifact that requires further analysis.

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` `70850e5ca472ca652dad201c767a58fae1e805bde0641e96ee0bf0a5c80cb394`	pdf-embedded-file	PDF EmbeddedFile object 8 at offset 0xC6	70307 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).

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