PDF malware analysis — malicious · 25d56dcb5a9fcbc3

MALICIOUS

PDF

4.9 KB

MD5: ad89dd90e7b7689801c2b236628a5db3 SHA-1: 3cfbbc958490bd0e8205e10acc082ea681445b3f SHA-256: 25d56dcb5a9fcbc3104fd7e93e318875a6079e97d084cc53f1db25cac8a7130e

106 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: Malicious File

The PDF file contains embedded JavaScript and a RichMedia (Flash) object, both of which are suspicious. The JavaScript stream utilizes the unescape() function, a common obfuscation technique. The embedded 'exploit.swf' file and the extracted 'javascript_obj0017_000.js' strongly suggest that this PDF is designed to exploit vulnerabilities, likely to download and execute a secondary payload. The confidence is moderate due to the lack of specific IOCs like URLs or hashes for the secondary payload.

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` `473eda1603d66199882cf134f2d2b44c71beff9fb99a9526507a4193b2e93036`	pdf-javascript-stream	PDF /JS object 17 at offset 0xB67	1639 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).

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