PDF malware analysis — malicious · 9ccc5e9a948aae3b

MALICIOUS

PDF

65.0 KB

MD5: eab9dea4fc092ddeb1500721b06d615a SHA-1: 3a82cab290f06a1929545a3be8ec1ead5cbff1a6 SHA-256: 9ccc5e9a948aae3bbb6b80b40afe8a7b25618a12a31c55f98ec96d57a66195fb

150 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1059.001 PowerShell

This PDF document exhibits multiple high-severity heuristic firings indicating malicious intent, including the presence of unescapable content, XFA forms with executable scripts, and an embedded file. The ML classifier strongly flags it as malicious. The primary attack vector appears to be exploiting PDF viewer vulnerabilities through embedded scripts and an embedded file, likely to download and execute a second-stage payload.

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` `1d5d966effff93d74bde4dfac34fd0b3b0a3e8514cd481932835d76cccf98a76`	pdf-embedded-file	PDF EmbeddedFile object 8 at offset 0xC6	65836 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).

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