PDF malware analysis — malicious · 388700eed6c2ae26

MALICIOUS

PDF

5.0 KB

MD5: c99b42594744e8edf15900899c93b240 SHA-1: b49ecdc5d85a0b46e96f6620b6ed2fd8445a6ef0 SHA-256: 388700eed6c2ae26adda3633e45aa2c8720b11d819cd491535ee35d927d6c522

106 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: Malicious File

The PDF file contains embedded JavaScript and a Flash object, indicating an attempt to exploit vulnerabilities. The heuristic firings for PDF_JAVASCRIPT, PDF_JS, and PDF_RICHMEDIA strongly suggest the execution of malicious code. The embedded JavaScript stream, named 'javascript_obj0017_000.js', and the embedded Flash file 'exploit.swf' are key artifacts. The JavaScript likely attempts to download and execute a second-stage payload, a common technique for initial access.

Heuristics 6

RichMedia (Flash) high PDF_RICHMEDIA

PDF contains /RichMedia (Adobe Flash) which is a historic exploit vector
unescape() call high PDF_UNESCAPE

unescape() found — often used to decode shellcode in PDF JS exploits
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
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.

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`exploit.swf` `9b9c21b9e7c2489645f2d8100489597d5459730292cebc9619b96404a112ac80`	pdf-embedded-file	PDF EmbeddedFile object 14 at offset 0x4D4	1503 bytes
`javascript_obj0017_000.js` `8bb72edfd76c83353fe8757b0a04c58de346ee2731911218acce0c3a0e651d4f`	pdf-javascript-stream	PDF /JS object 17 at offset 0xB67	1697 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).

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