PDF malware analysis — malicious · d71758e51808d774

MALICIOUS

PDF

1.3 KB

MD5: 21c89972a2b76cd75f2382a707edb645 SHA-1: f8de42ad260b56b5efc453162065033823a7cb3a SHA-256: d71758e51808d7742b25cedec8274370fcfafc665cf9278f92abe5a5475c83a5

136 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: Malicious File

The PDF document contains embedded JavaScript, identified by the 'PDF_JAVASCRIPT' and 'PDF_JS' heuristics. The 'PDF_ANNOT_SUBJECT_MARKER_EVAL_STAGER' heuristic indicates that the annotation subject is used to percent-decode and evaluate JavaScript, likely to launch a second-stage payload. ClamAV also detected this file as 'Pdf.Exploit.Agent-36065', confirming its malicious nature.

Heuristics 4

Annotation subject percent-decoding eval stager critical PDF_ANNOT_SUBJECT_MARKER_EVAL_STAGER

OpenAction JavaScript forces annotation enumeration, reads an annotation /Subject payload with getAnnots(), rewrites marker bytes into percent escapes, decodes it with unescape(), and dispatches it through eval. This is a high-confidence exploit-kit staging pattern. It is intentionally not mapped to CVE-2009-1492 unless getAnnots() itself carries the crafted integer or long argument shape for that vulnerability.
ClamAV: Pdf.Exploit.Agent-36065 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36065
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.

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0007_000.js` `9c67560e8c63b720885d3efc1627b844b86a6ec08e99e5b65a22eae832045756`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A3	431 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.