PDF malware analysis — malicious · 8876b69e5ae5c7d9

MALICIOUS

PDF

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

MD5: 0c611991d94ae163d9455ecac9f6faaf SHA-1: ba151978cc056232461123ff3c832c3259316a6b SHA-256: 8876b69e5ae5c7d9df4f85df0716b3f7aa2de08e3db3f6fe5d1b3b5bad55f216

208 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The critical ClamAV detection and high-severity heuristics for PDF eval() calls and JavaScript execution indicate a malicious PDF. The embedded JavaScript streams, particularly javascript_obj0013_000.js and javascript_obj0013_001.js, contain obfuscated code utilizing eval() and Math.fromCharCode, strongly suggesting the execution of a second-stage payload. The ML classifier output of 0.999998 further supports the malicious nature of this file.

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` `0277019077c5b8581494b6f8930747d036856dc7bef7a994c6393ac40a29357e`	pdf-javascript-stream	PDF /JS object 13 at offset 0x336	13462 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s). Carved artifact contains 3 long base64-like blob(s).
`javascript_obj0013_001.js` `a693465d9b9ce4eb6268bc228ba3008dac6e6bb357cae7b7bd51d6b5cf84102b`	pdf-javascript-stream	PDF /JS object 13 at offset 0x359	14168 bytes
Detection ClamAV: Pdf.Exploit.Agent-36118 Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s). Carved artifact contains 3 long base64-like blob(s).

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