PDF malware analysis — malicious · 6009b8167f5f7fa9

MALICIOUS

PDF

2.2 KB

MD5: 66f232e7c4670c03f73783502ce7628b SHA-1: 47c1d7f20fb44932fdaa4d94c690b7cbaf3cc6ef SHA-256: 6009b8167f5f7fa9fb4ca9f180de2022e261344ae44003378d2adf83939e8e7f

268 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client Execution T1059.007 JavaScript

The PDF file contains embedded JavaScript that leverages the CVE-2007-5659 vulnerability (Collab.collectEmailInfo). This exploit is designed to execute arbitrary code, and the presence of obfuscated JavaScript streams strongly suggests the intent is to download and execute a secondary malicious payload. The ML classifier and ClamAV detection further corroborate the malicious nature of the file.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

Heuristics 7

Collab.collectEmailInfo — CVE-2007-5659 critical CVE exact CVE_2007_5659

PDF JavaScript calls Collab.collectEmailInfo — CVE-2007-5659 is a buffer overflow in Adobe Reader triggered by a long argument or heap-sprayed message field passed to Collab.collectEmailInfo(). Part of a series of Acrobat JS API exploits. (matched in decompressed stream)
PDF JavaScript exploit cluster critical PDF_JS_EXPLOIT_CLUSTER

PDF combines an executable JavaScript/action surface with exploit staging indicators such as eval/unescape/fromCharCode, XFA script content, or a related CVE pattern. Benign form JavaScript remains low-severity, but this correlated cluster is high-confidence malicious behavior.
ClamAV: Heuristics.PDF.ObfuscatedNameObject critical CLAMAV_DETECTION

ClamAV detected this file as malware: Heuristics.PDF.ObfuscatedNameObject
unescape() call high PDF_UNESCAPE

unescape() found — often used to decode shellcode in PDF JS exploits (matched inside decoded stream)
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_obj0006_000.js` `98f286572dc716507dd0232e011403953103deef554833894d64355413acd041`	pdf-javascript-stream	PDF /JS object 6 at offset 0x1D1	1497 bytes
`stream_000_off000001f8.js` `a42516620d1127874c1779147bdc87a0e8a618c662e7ebf73d18dc2e51ea333a`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x1F8	3130 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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