PDF malware analysis — malicious · 9cf3af0d7b9de492

MALICIOUS

PDF

29.8 KB

MD5: b2db1fa6ac47c9a750b2e2af3be01623 SHA-1: 52e2fb1797f255eeb5a82ef8d1bf15188cb01b68 SHA-256: 9cf3af0d7b9de492a642278d039d92265b126b2544434fa053112340c712aad5

106 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript/JScript T1559.002 Component Object Model Hijacking

The PDF file contains embedded JavaScript and a RichMedia (Flash) object, indicated by the PDF_JAVASCRIPT, PDF_JS, and PDF_RICHMEDIA heuristics. The presence of unescape() calls and the extracted artifacts 'hJzrcNRhacMbB.swf' and 'javascript_obj0006_000.js' suggest an attempt to execute malicious code. The embedded JavaScript stream is likely responsible for loading and executing the Flash content or other malicious payloads.

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
`hJzrcNRhacMbB.swf` `767382813fc770c9716554c3266b22eee1636037ca964af05acf6ff66db4a27d`	pdf-embedded-file	PDF EmbeddedFile object 16 at offset 0xC25	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` `4521fab89a70ea9f603f0cc1d6da8d1577090bdac4a71eae959650a4a5db7d6e`	pdf-javascript-stream	PDF /JS object 6 at offset 0xF9	2003 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).

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