PDF malware analysis — malicious · 3a615b6d393ab718

MALICIOUS

PDF

429.5 KB

MD5: a11a921964ea86cecf2027d2b22b161b SHA-1: 90464e83abc64be7edf241b1fc5abcffaccbc163 SHA-256: 3a615b6d393ab71887d4bb5a5678e8a9754885d4b3edb76088e3ae377df60ca6

124 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File

The PDF contains embedded JavaScript and a Flash object (Tatsumaki.swf), indicating an attempt to exploit vulnerabilities within the PDF reader or Flash player. The ML classifier strongly flagged this PDF as malicious. The embedded Flash file is the primary indicator of malicious activity, likely serving as a loader for further malicious code.

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` `0bc9104ef385faccdfed70e72f9f900af1d496ac1754b078e773f23849fa03c2`	pdf-embedded-file	PDF EmbeddedFile object 18 at offset 0x2CFA	4653 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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