PDF malware analysis — malicious · 2b7828a95c3638ae

MALICIOUS

PDF

12.4 KB

MD5: 24a8d0030328846fe9be70694c481cf9 SHA-1: f92f481f0fcbaab36ab77306aba44eaa87b973db SHA-256: 2b7828a95c3638ae0a037e584d745e4c0c3fffdf5de12267332059eab7683cd1

138 Risk Score

Malware Insights

MITRE ATT&CK

T1204 Malicious Link T1059.001 PowerShell

The PDF file contains embedded JavaScript that leverages the CVE-2007-5659 vulnerability, specifically using the Collab.collectEmailInfo method. This JavaScript is designed to download and execute a secondary payload, as indicated by the presence of deobfuscated JavaScript files. The overall behavior suggests a multi-stage attack aimed at delivering further malicious content.

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-36064 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36064
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` `a5c8f0f722df4dd9876a0087e1eee65bd3020c5995f94f6729f7e17f3f3677a0`	pdf-javascript-stream	PDF /JS object 7 at offset 0x19D	331 bytes
`legacy_pdfkit_stage_000.js` `f48ec439a4b6463be570762bc7a7a6d804014bfefabb241b47dfd49a38e29055`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F2	11766 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `dca3bf50c0e13b63791e23e2fdfd1da924600391aa0c1fb128853b52e9cb07dc`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F2	4760 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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