PDF malware analysis — malicious · 51d13dc86fd0cf29

MALICIOUS

PDF

14.7 KB Created: 2010-02-02 07:30:19 Authoring application: DAOGElrLbQjMHN (via lrPDisnljMRLhz)

MD5: 2eb3f57a4328827fa3b001f6555cf3d8 SHA-1: b54e565b8eb8a7e333ab0a1eb18b7b6f1774c9bf SHA-256: 51d13dc86fd0cf2926e73efa9863c38c240b71753207ef88ff062b3ab92486e9

108 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 and the presence of an embedded JS stream. The ML classifier and ClamAV detection strongly suggest malicious intent. The embedded JavaScript is likely responsible for downloading and executing a second-stage payload, as suggested by the 'Pdf.Dropper' ClamAV signature. The file's structure and the nature of the heuristics point towards a dropper or exploit delivery mechanism.

Machine Learning

Nyx PDF Classifier malicious score 0.9999

Heuristics 4

ClamAV: Pdf.Dropper.Agent-7212706-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-7212706-0
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.
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 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0007_000.js` `cd2daeaba378dd57d81637ebace37bfabbece25b8cdb3ac782f622b539d2deaa`	pdf-javascript-stream	PDF /JS object 7 at offset 0x518	12989 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).

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