PDF malware analysis — malicious · 47c73a7518dd0374

MALICIOUS

PDF

118.5 KB

MD5: 12370cfc4f3baf786d432eeab690ca1f SHA-1: e19980e5b8ec7d807137e0f93a94572299718378 SHA-256: 47c73a7518dd037459b5b14f392c7e60f3d2d4d23d31568a64838405d378d79d

166 Risk Score

Malware Insights

MITRE ATT&CK

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

The PDF contains embedded JavaScript, including a large comment-padded eval stager and multiple calls to eval() and String.fromCharCode(). This indicates the script is heavily obfuscated and designed to execute arbitrary code. The presence of ClamAV detection for 'Pdf.Exploit.Agent-36086' further supports that this is an exploit-based PDF. The primary IOC is the extracted JavaScript file, which likely contains the malicious payload or exploit code.

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` `9a124415cae853dafa8efcc943d9aec0c82543091a17a8985ec6f772bba2b915`	pdf-javascript-stream	PDF /JS object 6 at offset 0x143	626685 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_002_off0001d843.bin` `1fcfcaf100e36aa75e72cc036844aa3ec1f3abc2b3fd7579be23c4d7e993bd39`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x1D843	200 bytes

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