PDF malware analysis — malicious · 50cc33287f6ce064

MALICIOUS

PDF

30.1 KB

MD5: 166eaeb011ef4b190322dfa716579fd5 SHA-1: 3c713fa7d0a05dea15fd53adfde003a7f39e1190 SHA-256: 50cc33287f6ce064309f6daf77e1d400961cc1987140035f49ca8fc569f1a4c7

106 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1566.001 Spearphishing Attachment

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 an eval() call within the JavaScript suggests code execution. The embedded JavaScript stream and the embedded file are suspicious artifacts that likely contribute to the malicious functionality. The exact intent of the script is unclear due to obfuscation, but it is likely designed to download and execute a second-stage payload.

Heuristics 6

RichMedia (Flash) high PDF_RICHMEDIA

PDF contains /RichMedia (Adobe Flash) which is a historic exploit vector
eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution
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 0xD53	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` `f35f0ff7f475a70cfd18f920261dc0075e6236af1ebfa5709f1a54ec8fc9b288`	pdf-javascript-stream	PDF /JS object 6 at offset 0xF9	2311 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).

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