PDF malware analysis — malicious · bb5bc948f9053218

MALICIOUS

PDF

31.3 KB

MD5: 6af0d33311934f4017897f800ea903e5 SHA-1: 806b990e62b0815bb8ba8b050e6777d4d95fc12f SHA-256: bb5bc948f90532184de73984bbbaffe0778263fb621ab12aee8aa2e4402f58d4

106 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF contains embedded JavaScript and a RichMedia (Flash) object, indicating an attempt to exploit vulnerabilities. The heuristics indicate eval() calls and JavaScript actions, suggesting the embedded scripts are designed to execute arbitrary code. The extracted artifacts, including a SWF file and JavaScript files, are likely components of a multi-stage attack. The primary intent appears to be the execution of a malicious payload via the embedded Flash object, facilitated by the JavaScript.

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 0x1206	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` `6782673d9f7c46822160ccb18d0cff97aab52598608b017b640bfb9466a5fc55`	pdf-javascript-stream	PDF /JS object 6 at offset 0xF9	3517 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` `1757dd008c01e676f0d05d5925dac75b13ff5dc41524cd97bbbbb4c4d00f0d5d`	deobfuscated-js	split-join delimiter stripped JavaScript at offset 0xDB1	2175 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).

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