PDF malware analysis — malicious · 5585cadbab7745ea

MALICIOUS

PDF

11.5 KB

MD5: e970fbfa2cc53730dc7065db18f816ad SHA-1: 6d7704b6edde6f7c9c28f02d0c2511611a325187 SHA-256: 5585cadbab7745eab8c3e74bf114a3c5ce2ac5bdffedaf83430ac6c9e2161b44

146 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript/JScript T1204.002 Malicious File

The PDF file contains embedded JavaScript, triggered by the 'Collab.collectEmailInfo' method, which is associated with CVE-2007-5659. This exploit is designed to execute arbitrary JavaScript. The presence of multiple obfuscated JavaScript streams and a critical ClamAV detection (Pdf.Exploit.Agent-36079) strongly indicate that this PDF is a malicious dropper. The script's likely intent is to download and execute a second-stage payload.

Heuristics 6

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-36079 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36079
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.
String.fromCharCode low PDF_FROMCHARCODE

String.fromCharCode found — used to construct payload strings dynamically. Common in benign JavaScript libraries for codepoint manipulation, so this alone is informational; weaponised use is also caught by the dedicated fromCharCode-stage and exploit-shape rules. (matched inside decoded stream)
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` `ef8bdac794684ae9cd4eb7091d80e1c5ca478c06c639d72d01626c1f7ce78b6d`	pdf-javascript-stream	PDF /JS object 7 at offset 0x19C	578 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).
`legacy_pdfkit_stage_000.js` `7da69b8c0696d0f596659e5653bd1858791773dd0f4f3aad125143435cfbafac`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x36F	12017 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `c4ec1c7728814199230e5405caea37d5d61cbc62a1b5c2e8c3bf958d6b6bdceb`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x36F	4873 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.