PDF malware analysis — malicious · bd8708ec8770eb2e

MALICIOUS

PDF

118.6 KB

MD5: 3f40d6bc44d2c9efb5f7c223b8c3e584 SHA-1: eb214a05f4e78e550bb0b640e8122d5afbc0291b SHA-256: bd8708ec8770eb2e276db47e25171b50fe83e50638cabeb20f561a0190c6c966

166 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File T1566.002 Spearphishing Attachment

The PDF file contains embedded JavaScript, including a high-severity heuristic for a 'Large comment-padded JavaScript eval stager'. This indicates the script is designed to obfuscate malicious code, likely for downloading and executing a secondary payload. ClamAV detection as 'Pdf.Exploit.Agent-36086' further confirms its malicious nature. The lack of readable document body text prevents a more specific determination of the lure, but the technical indicators point to a typical exploit delivery mechanism.

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` `0dbca32407ca1b23977c1b3e46388a3186fdcc5c803c6136db2369c78d377b99`	pdf-javascript-stream	PDF /JS object 6 at offset 0x143	626763 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_off0001d706.bin` `0443ee7ade5b151607a9d216c4b86234f6ceb7ae9fdc4f377b3eee7a43dae9cd`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x1D706	300 bytes

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