PDF malware analysis — malicious · a29d426df72c12ae

MALICIOUS

PDF

4.0 KB

MD5: d4b92b8d85497372fb3d87dfef537685 SHA-1: aa0fd4d9fd5d426ec6019724d8ab998041ee8e7a SHA-256: a29d426df72c12aeb1954cf2ae17c9bb1af0207b84eff2769d0eaca21cf43869

84 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript/JScript T1204.002 Malicious File

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The CLAMAV_DETECTION heuristic flags it as Pdf.Exploit.Agent-35903, suggesting it's a known exploit. The embedded JavaScript stream is the likely mechanism for delivering the exploit payload.

Heuristics 4

ClamAV: Pdf.Exploit.Agent-35903 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-35903
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 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_000_off000001d2.js` `860eae5f96eb426380281c575a089242b50523bbb4bbb8dd765e582cd9c07d2e`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x1D2	294 bytes

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