PDF malware analysis — malicious · 36802b76291dd56e

MALICIOUS

PDF

8.0 KB

MD5: c8d027f6d0cfdffb7f1f949dd92a2ea1 SHA-1: 5108b354f5944d85d9ec470041c12396ec462d88 SHA-256: 36802b76291dd56ec997df953bebc2920f881b1d5b654e9035709e6955e247c9

84 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript/JScript T1204.002 Malicious File

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings including 'PDF_JAVASCRIPT' and 'PDF_JS'. The 'CLAMAV_DETECTION' heuristic identifies the file as 'Pdf.Exploit.Agent-36063', strongly suggesting it's a known exploit. The embedded JavaScript is the likely mechanism for delivering the exploit, aiming to compromise the user's system.

Heuristics 4

ClamAV: Pdf.Exploit.Agent-36063 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36063
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.
syncAnnotScan annotation-staging primitive low PDF_FOXIT_SYNCANNOTSCAN

PDF JavaScript calls syncAnnotScan() — a no-op annotation-enumeration primitive used by exploit-kit JavaScript to stage payload reads from annotation /Subject fields before eval(). Not a vulnerable sink itself; rarely seen in legitimate PDFs. (matched in decompressed stream)

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_000_off000001cb.js` `eb39e2de4dbbc100de6d3e30aa43ff78fa075618862ba1ebba5151ea3a3b848d`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x1CB	273 bytes
`deobfuscated.js` `b81b1591fb4f30be143d2574800b5c067a7b82ca27865b3989adb552ec4d4b0a`	deobfuscated-js	PDF JavaScript deobfuscation pass	30465 bytes

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