PDF malware analysis — malicious · 1e21d5f04d2be370

MALICIOUS

PDF

31.2 KB

MD5: bf83577216ebe19440e927ed37340705 SHA-1: 015a88a298c22e73803ea439390395b5c325cadd SHA-256: 1e21d5f04d2be3709a2759b9cfc4e90f7615ba5eac4364bd2089d44fe0e83a44

106 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1566.001 Spearphishing Attachment T1204.002 Malicious File

The PDF contains embedded JavaScript and a Flash object (SWF file), indicated by the PDF_JAVASCRIPT, PDF_JS, and PDF_RICHMEDIA heuristics. The presence of an eval() call in the JavaScript suggests code execution. The extracted artifacts include a SWF file and two JavaScript files, one of which is deobfuscated. The overall purpose appears to be the delivery of malicious content via the PDF, likely to exploit vulnerabilities or download additional payloads.

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 0x11A9	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` `7fd9a315b36993427fddeb5b9bd972bbe088ebe10b7247ae78edbe2712122837`	pdf-javascript-stream	PDF /JS object 6 at offset 0xF9	3424 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).
`legacy_pdfkit_stage_000.js` `9469c2b054377e90bccb4572875eaa91087b0c72bb77c6cf0cc9a872c04762d8`	deobfuscated-js	split-join delimiter stripped JavaScript at offset 0xDB1	2094 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).

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