PDF malware analysis — malicious · 0016e992f33f1a3d

MALICIOUS

PDF

66.2 KB

MD5: 270170e5d15759f5fecd05184f117b0c SHA-1: e57f54d7c2984fd9c6bb2899079d4eaeaf810e23 SHA-256: 0016e992f33f1a3d79ce66918fd847e87a022f270dda61206accb6bf2cd6a2f0

150 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File T1566.002 Spearphishing Attachment

The PDF contains embedded scripts and an embedded file, flagged by multiple high-severity heuristics including PDF_UNESCAPE and PDF_XFA_SCRIPT. The ML classifier strongly indicates maliciousness. The presence of an embedded file suggests a potential second-stage payload delivery mechanism, although the exact nature of the exploit is not fully detailed.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

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` `1361a0b584b9b34449ee43e22984b14113653d99d20084aa7464d61a393f49a0`	pdf-embedded-file	PDF EmbeddedFile object 8 at offset 0xC6	67060 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).

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