PDF malware analysis — malicious · 506e076e9f7bd94a

MALICIOUS

PDF

31.5 KB

MD5: bb3a6c6ccd6946bbc925c27e75d94f54 SHA-1: db5df6a913c33d4b54f820886edf4cb10b195b38 SHA-256: 506e076e9f7bd94a8f708d6ba6dd94c995d92fdd427eb95575ed124651583ed0

106 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript/Script Execution T1204.002 Malicious File

The PDF file contains embedded JavaScript and a Flash object (SWF). The JavaScript, particularly the eval() call, is highly suspicious and likely responsible for loading and executing the embedded Flash content. The presence of these elements strongly suggests an exploit chain designed to deliver a secondary payload. The extracted artifacts indicate a multi-stage attack involving JavaScript and Flash.

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 0x12FB	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` `f4a45bd7d6f09d7b73f96d758ee0a7753aabadeb9d8330c42d968ca26edeffca`	pdf-javascript-stream	PDF /JS object 6 at offset 0xF9	3762 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` `97c0bf4181d55a634624a7c9ea5e5919819c688cbb08638c8df2a0ca29f02e56`	deobfuscated-js	split-join delimiter stripped JavaScript at offset 0xDB1	2392 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).

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