PDF malware analysis — malicious · 43cbdf813e2fcfab

MALICIOUS

PDF

3.8 KB

MD5: 9a3b9941be808957d14688f9823ef76b SHA-1: 716cb3de35007bee9a11e33c004682af99f6772a SHA-256: 43cbdf813e2fcfab554b9a6d9483fc4011fe75fbf45fb8412a2350e5456a3f18

176 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1559.001 Component Object Model Hijacking T1059.001 PowerShell

The PDF contains embedded JavaScript that triggers an embedded RTF file, identified by ClamAV as Rtf.Exploit.CVE_2017_11882-6584355-1. This exploit targets a known vulnerability in the Microsoft Equation Editor. The embedded RTF file, named 'gueu.doc', is the primary payload. The ML classifier strongly indicates maliciousness.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 6

ClamAV: Rtf.Exploit.CVE_2017_11882-6584355-1 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Rtf.Exploit.CVE_2017_11882-6584355-1
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.
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.
Embedded file low PDF_EMBEDDED

PDF embeds a file attachment — could carry an executable or another weaponised document as a nested payload
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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`gueu.doc` `25ff7910fc51adac69473111d1bf50ecbd6b23ac7e8f7312f3ce65a3f814ca90`	pdf-embedded-file	PDF EmbeddedFile object 8 at offset 0x394	8362 bytes
Detection ClamAV: Rtf.Exploit.CVE_2017_11882-6584355-1 Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`javascript_obj0009_000.js` `3ea6654ff6b5753a1a6c0ebe648a641255cac7e0afa84bdd9859c0c7d4fe0e08`	pdf-javascript-stream	PDF /JS object 9 at offset 0xDA8	57 bytes
`javascript_obj0009_001.js` `6226932b1f4aa22c110833eb3b5a078be7c6254dd1f363e406e600e36b241f6d`	pdf-javascript-stream	PDF /JS object 9 at offset 0xDA8	55 bytes

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