PDF malware analysis — malicious · 512d7f5bdaa81639

MALICIOUS

PDF

31.6 KB

MD5: 7f6adfb23f23e8ff2739c8254379f033 SHA-1: 4734e2f3ef2ae6f70a8e1a1370aec8dd1636727d SHA-256: 512d7f5bdaa81639ee3cf3f0ef014ab5a230b36bacf2579f99321a3caea19ca3

106 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript T1204.002 Malicious File

The PDF contains embedded JavaScript and a RichMedia (Flash) object. The heuristics indicate an eval() call within the JavaScript, suggesting obfuscation and dynamic code execution. The embedded artifacts, including a SWF file and JavaScript files, point towards a multi-stage attack. The primary intent appears to be the execution of the embedded Flash object, which likely serves as a downloader or initial exploit stage.

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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`TyPWoIJRMY.swf` `767382813fc770c9716554c3266b22eee1636037ca964af05acf6ff66db4a27d`	pdf-embedded-file	PDF EmbeddedFile object 16 at offset 0x136C	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` `30c34c79715f6e0cf5f278ca1b1706d537c7ad3d48f7bd6355b24330c40bdde7`	pdf-javascript-stream	PDF /JS object 6 at offset 0xF9	3875 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).
`legacy_pdfkit_stage_000.js` `50ac2ff6b024bf127e348a5cea5f87f4c6238c49aa3482179c4beb3d7d68325f`	deobfuscated-js	split-join delimiter stripped JavaScript at offset 0xDB1	2499 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).

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