PDF malware analysis — malicious · a3d7b1b262107a3b

MALICIOUS

PDF

11.7 KB

MD5: ee286cb8d60d69da34b3454b22f810df SHA-1: 5df7edaf2be75289e1c7d6b57cc9c101ac47ad28 SHA-256: a3d7b1b262107a3b87e6029ea2f8c7b36bdca37081bd5160e256ec74c9a8eda0

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings including 'PDF_JAVASCRIPT' and 'PDF_JS'. A critical heuristic identified the CVE-2007-5659 vulnerability related to 'Collab.collectEmailInfo', suggesting the exploit leverages this known flaw. The ClamAV detection 'Pdf.Exploit.Agent-36065' further confirms its malicious nature. The deobfuscated JavaScript files 'legacy_pdfkit_stage_000.js' and 'legacy_pdfkit_stage_001.js' were extracted, implying a multi-stage attack where the PDF acts as a loader for further malicious activity.

Heuristics 5

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. (identified after JavaScript deobfuscation)
ClamAV: Pdf.Exploit.Agent-36065 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36065
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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0007_000.js` `9c67560e8c63b720885d3efc1627b844b86a6ec08e99e5b65a22eae832045756`	pdf-javascript-stream	PDF /JS object 7 at offset 0x19C	431 bytes
`legacy_pdfkit_stage_000.js` `e971f00a63b67e5b39d80249f86372e3066b94c54ab956d544861100c195511d`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x315	11943 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `a409ba46e43d727d62d074c152627e9864e5334dfc6ccc0b8309f0a5c47051fb`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x315	4950 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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