PDF malware analysis — malicious · f021e02913c49f2b

MALICIOUS

PDF

11.7 KB

MD5: 026aceb6e8a72c71461e024a52cabfa0 SHA-1: 1cdc1616622d34dd714ad614a5ea98bd54ffdb7c SHA-256: f021e02913c49f2bf8fceabc3181fe87b2f02d367658de6c65dd17b218ae8523

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript/JScript T1204.002 Malicious File

The PDF file contains embedded JavaScript, identified by multiple heuristics including PDF_JAVASCRIPT and PDF_JS. The critical CVE_2007_5659 heuristic indicates the use of a known exploit targeting the Collab.collectEmailInfo function to execute JavaScript. This script is likely designed to download and execute a second-stage payload, as suggested by the presence of deobfuscated JavaScript files and the ClamAV detection as Pdf.Exploit.Agent-36065. The document body is unreadable, but the exploit and script execution point to a malicious intent.

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` `17b3fab5b930839955b81f12e1889fb95402f6d9584d752d42fda5a513a5e9fb`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x315	11800 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `8deeef9d3d9e5ae8df1a782394e28cc7c0ff258ea62b29fceba02f1424203fb8`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x315	4882 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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