PDF malware analysis — malicious · cd302dda2a7dc66c

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: 226d1c1938e69f3425e79540dfcb8365 SHA-1: 0c580a72cfd11e7c651d366fa634ddaa78d09972 SHA-256: cd302dda2a7dc66cd7b1ee34dc4e3c8d32d661fa89b070b2058dd95707d816df

210 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The sample is a PDF file flagged as malicious by ClamAV with the signature Pdf.Exploit.Agent-36118. Static analysis detected JavaScript actions and an eval() call within the PDF, indicating the execution of obfuscated code. Two large JavaScript streams were extracted, further supporting the presence of malicious scripting. The ML classifier also strongly indicated maliciousness. The primary attack pattern involves exploiting a PDF vulnerability to run embedded JavaScript, which is likely responsible for downloading and executing a secondary payload.

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` `f63903e7ec9976ccc32bc5eecc822a65b99e113868d57aab5835d0bee8de7a34`	pdf-javascript-stream	PDF /JS object 13 at offset 0x336	13281 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s). Carved artifact contains 15 long base64-like blob(s).
`javascript_obj0013_001.js` `5b92e54a630e2d8588ea894ff9bb08dddcbd69a4e41e30de7cdf09ebf3146b89`	pdf-javascript-stream	PDF /JS object 13 at offset 0x359	13987 bytes
Detection ClamAV: Pdf.Exploit.Agent-36118 Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s). Carved artifact contains 15 long base64-like blob(s).

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