PDF malware analysis — malicious · ffc723f61da9ade1

MALICIOUS

PDF

14.5 KB Created: 2008-07-26 19:43:58 Authoring application: Scribus 1.3.3.12 (via Scribus PDF Library 1.3.3.12)

MD5: 1c49a36eabefc9dc3a2957419d950cc5 SHA-1: 600a3e0a7c4817a1f42708fda460a01c00c31e11 SHA-256: ffc723f61da9ade15baecdb8b17fa9d4a13b294d431ec9c505940561e057c442

208 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1059.007 JavaScript

The PDF file contains embedded JavaScript with multiple obfuscation layers, including the use of `eval()` and string concatenation. Heuristics indicate JavaScript actions and embedded JS streams, with a high confidence ML classifier flagging it as malicious. ClamAV also detected it as 'Pdf.Exploit.Agent-36118'. The script's primary function appears to be downloading and executing a second-stage payload, as suggested by the `eval()` calls and the nature of the extracted JavaScript.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 6

ClamAV: Pdf.Exploit.Agent-36118 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36118
ClamAV detection on extracted artifact critical EXTRACTED_FILE_CLAMAV

ClamAV flagged at least one file extracted from inside this sample. Even when the wrapping document carries no AV detection of its own, a hit on the carved artifact is a strong indicator the sample is a delivery vehicle.
eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution
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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0013_000.js` `9675663bdd5c37615793c5b9ec7968b6ccbfc8fb5f19045c310a9169d0c4f712`	pdf-javascript-stream	PDF /JS object 13 at offset 0x336	13322 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).
`javascript_obj0013_001.js` `efb7d8cb4687e60269dc32b36530a2fa0fca1585d380dcce0becc44e4db8d7ee`	pdf-javascript-stream	PDF /JS object 13 at offset 0x359	14028 bytes
Detection ClamAV: Pdf.Exploit.Agent-36118 Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).

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