PDF malware analysis — malicious · 068a2c72bc2e0afd

MALICIOUS

PDF

5.4 KB Created: XíF'#¹ëLEx Authoring application: OEÃj`ºõS[| (via OEÃj`Ûà]e/DºIáSw ÆæXk)

MD5: 126019a5f239b2bf92b2161aa4c39ee1 SHA-1: d1e2904c9c006a2d633831c48e1cf321c9beb0ff SHA-256: 068a2c72bc2e0afd4fde62dea027528dfc88940e97647fbe947f9de6a2acccb8

88 Risk Score

Malware Insights

MITRE ATT&CK

T1059.007 JavaScript T1566.001 Spearphishing Attachment

The PDF file is flagged as malicious by an ML classifier and contains embedded JavaScript, which is used to obfuscate the payload. The presence of PDF_ENCRYPTED_WITH_JS indicates that the JavaScript is likely responsible for decrypting and executing the malicious content, which is a common technique for delivering second-stage payloads. The extracted JavaScript artifact, javascript_obj0024_001.js, is included as an IOC.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

Encrypted PDF carries /OpenAction — payload hidden from static analysis high PDF_ENCRYPTED_WITH_JS

PDF declares /Encrypt and also references an executable trigger (/OpenAction). Document encryption hides the JavaScript body and stream contents from static scanners — combined with auto-execution indicators this is a known evasion pattern used to deliver weaponised JavaScript that the analyst cannot inspect without the decryption key.
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.
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 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0024_001.js` `e3caff7b6bf688ed4630317bf0d3799eb6f8f8f34add590162473152d1471fa6`	pdf-javascript-stream	PDF /JS object 24 at offset 0x8CD	5002 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 7 long base64-like blob(s).

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