PDF malware analysis — malicious · ca911d3a4abfa386

MALICIOUS

PDF

431.1 KB

MD5: 9c60a457b4f24ae3b7679420ed653062 SHA-1: 739de83a8199e6cae0ba7215afbb6a38d0717461 SHA-256: ca911d3a4abfa386f3ae75c0e173ccb14febb3899e5506a206da8063a228fcee

124 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file exhibits multiple indicators of malicious activity, including embedded JavaScript, a RichMedia (Flash) object, and an embedded file named Tatsumaki.swf. The ML classifier strongly flags this PDF as malicious. The presence of the embedded SWF file is a primary indicator, likely intended to deliver a secondary payload or exploit.

Machine Learning

Nyx PDF Classifier malicious score 0.9999

Heuristics 8

RichMedia (Flash) high PDF_RICHMEDIA

PDF contains /RichMedia (Adobe Flash) which is a historic exploit vector
ASCIIHexDecode filter (with exploit indicators) medium PDF_FILTER_HEX

Hex-encoding filter present alongside exploit delivery indicators — often used to hide payload or shellcode bytes
JavaScript action low PDF_JAVASCRIPT

PDF contains a /JavaScript action. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
Embedded JS stream low PDF_JS

PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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/xci/2.6/
- http://www.xfa.org/schema/xfa-template/2.6/

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`Tatsumaki.swf` `362e53a02bab6ce79200f72937867d9b3b6ba4f2c390bdb7862571b85ed215a3`	pdf-embedded-file	PDF EmbeddedFile object 18 at offset 0x2CFA	5060 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact entropy is 7.95, consistent with packed or encrypted content.

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