PDF malware analysis — malicious · ccc5d65026d42c23

MALICIOUS

PDF

4.1 KB

MD5: b409b0f58dc055ba6f4b48ff27c4ef9e SHA-1: 6eb39f02367f420edcac4d40b7108370ca9da6e2 SHA-256: ccc5d65026d42c237972f1ffb168764febb707838935d080cea66cd7c0319fce

156 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF contains embedded JavaScript, including an eval() call and String.fromCharCode usage, indicating obfuscated code execution. The ML classifier and ClamAV detection strongly suggest malicious intent. The embedded JavaScript likely downloads and executes a second-stage payload, as indicated by the 'Pdf.Dropper.Agent-7305039-0' ClamAV signature. The extracted JavaScript files 'acroform_b64_00.js' and 'javascript_obj0013_001.js' further support the presence of malicious scripting.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 6

ClamAV: Pdf.Dropper.Agent-7305039-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-7305039-0
eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution (matched inside decoded stream)
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_obj0013_001.js` `fb336f75709a3eb440d983c83cbcd584e24f00c2e8cf76eff951a4a0a8e82bb5`	pdf-javascript-stream	PDF /JS object 13 at offset 0x368	6333 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 4 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).
`acroform_b64_00.js` `621ff2a9686acbc5d18fe2813b2e284bb53a491594c0762eaa8f8f1bd4c4e536`	deobfuscated-js	PDF AcroForm base64 (decompressed) at offset 0x99D	3595 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).

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