PDF malware analysis — malicious · 2350bee28f2cdc9b

MALICIOUS

PDF

12.1 KB

MD5: 56f525b2580ea0b4af4fa0909d1b2b68 SHA-1: 6e6f29d117718f4b6558899c77cd85ed798ae776 SHA-256: 2350bee28f2cdc9b0e6093155e3318b9addc5b14f36dab2f6ecd9cefe3426f38

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. ClamAV detection as 'Pdf.Exploit.Agent-36063' strongly suggests exploitation of a PDF vulnerability. The embedded JavaScript is the likely mechanism for delivering the exploit payload.

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` `82a053490b72f08087f587479ae0d87e4bbcd428c58a6df1a318e1aa5c44ad34`	deobfuscated-js	PDF JavaScript deobfuscation pass	42241 bytes

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