PDF malware analysis — malicious · 2685675e84a4e262

MALICIOUS

PDF

118.5 KB

MD5: 6e86868c11163194b830edb81d0d17a8 SHA-1: 29a6bd53a9415b0ef2bdb96bd4ed8c1fac0cda80 SHA-256: 2685675e84a4e2622588092dd89c52de8281a114e30ba4a2bdbbc5be8d1eadb5

166 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings including 'PDF_JAVASCRIPT', 'PDF_JS', and 'PDF_EVAL'. The 'PDF_JS_LARGE_COMMENT_PADDED_EVAL' heuristic suggests a stager pattern. ClamAV detection as 'Pdf.Exploit.Agent-36086' confirms malicious intent. The primary function appears to be the execution of obfuscated JavaScript, likely to download and execute a further stage, which is a common technique for PDF-based malware delivery.

Heuristics 7

ClamAV: Pdf.Exploit.Agent-36086 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36086
eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution (matched inside decoded stream)
Large comment-padded JavaScript eval stager high PDF_JS_LARGE_COMMENT_PADDED_EVAL

PDF JavaScript contains a very large stream padded with long random-looking block comments around String.fromCharCode and eval. This is an exploit-kit obfuscation shape used to bury a decoder and recovered stage inside noise, not normal PDF form automation.
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.
String.fromCharCode low PDF_FROMCHARCODE

String.fromCharCode found — used to construct payload strings dynamically. Common in benign JavaScript libraries for codepoint manipulation, so this alone is informational; weaponised use is also caught by the dedicated fromCharCode-stage and exploit-shape rules. (matched inside decoded stream)
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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0006_000.js` `2175870a8d93ba34d5f19f8c3573ffa1918a1239738d14bae239236b0dc08b29`	pdf-javascript-stream	PDF /JS object 6 at offset 0x143	627207 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s). Carved artifact contains 42 long base64-like blob(s).
`stream_001_off0001d67a.bin` `85d86eabce909c5500a76e1b34278543b09f71bea3efc0a62c8e23a84ccfadc5`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x1D67A	300 bytes

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