PDF malware analysis — malicious · efc79b97aa37d723

MALICIOUS

PDF

7.1 KB

MD5: 6c669c4983adfe7ff62f169063d411d0 SHA-1: 069393f79aaca8bd8163683fea6d1c9bba4d6a5e SHA-256: efc79b97aa37d7239747718421912f504c70dc23e925d2dbff398a22573330f3

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, indicating an attempt to exploit vulnerabilities. The presence of 'unescape()' and obfuscated JavaScript suggests the script is designed to download and execute a secondary payload. The embedded 'exploit.swf' and 'javascript_obj0017_000.js' are key artifacts in this attack chain.

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` `cb7af0e67e2a0a76b8e50dd10996c7312a378dc5589bba1b97edfe55b7ea61cc`	pdf-embedded-file	PDF EmbeddedFile object 14 at offset 0x4D4	3764 bytes
`javascript_obj0017_000.js` `dfe0c557926e7eed035cf9ee3ac19cdf5d8b5efe0bbe030aaebb8a7a05d66bb3`	pdf-javascript-stream	PDF /JS object 17 at offset 0x143C	1622 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).

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