PDF malware analysis — malicious · 53c026cd9a1fa85d

MALICIOUS

PDF

29.8 KB

MD5: 08d903d36a0319d9e999bb2960afd3fe SHA-1: 112d459175f42c48ecbd23d095f013bcae031d26 SHA-256: 53c026cd9a1fa85dec67fc0ab69499a0c89105284e7a4b4d00b01eed9761aa62

106 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1559.002 Component Object Model Hijacking

The PDF file contains embedded JavaScript and a RichMedia (Flash) object, indicating an attempt to execute code or exploit vulnerabilities. The presence of 'unescape()' calls in the JavaScript suggests obfuscation. The embedded JavaScript stream and file are suspicious artifacts that likely contribute to the malicious functionality, possibly by downloading and executing a second-stage 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
`embedded_file_obj0016.bin` `767382813fc770c9716554c3266b22eee1636037ca964af05acf6ff66db4a27d`	pdf-embedded-file	PDF EmbeddedFile object 16 at offset 0xBF5	26993 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact entropy is 7.98, consistent with packed or encrypted content.
`javascript_obj0006_000.js` `8a4b07ae63acd236013d194f4690fa14201d2e2a3bdce78a3c1a79238938c3be`	pdf-javascript-stream	PDF /JS object 6 at offset 0xF9	1955 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).

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