PDF malware analysis — malicious · 48e3433ff4c3ce30

MALICIOUS

PDF

6.7 KB

MD5: 6d53ff08ff8cc10626f043a5a5bd2806 SHA-1: 04b4b770f076a5f1afec8316a9ba5377eee77215 SHA-256: 48e3433ff4c3ce3066d9a2f2b4c2527ec76bdc54847c0b6a0fa977992e25dbaf

156 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link T1204.002 Malicious File

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings including PDF_JAVASCRIPT and PDF_JS. The critical CVE_2007_5659 firing suggests exploitation of a known vulnerability via the Collab.collectEmailInfo method. The presence of unescaped JavaScript and suspicious extracted artifacts like javascript_obj0007_000.js and javascript_obj0007_001.js further supports this. The script's purpose is likely to download and execute a secondary payload, although the exact URL or payload is not directly extractable from the provided evidence.

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.
unescape() call high PDF_UNESCAPE

unescape() found — often used to decode shellcode in PDF JS exploits
Suspicious extracted artifact high 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.
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.

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0007_000.js` `e76ab6c49e43b585a68989b22e4434f7205157f19d386843f8e6a84576981797`	pdf-javascript-stream	PDF /JS object 7 at offset 0x2A5	5903 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 4 eval/decoder/string-building token(s). Carved artifact contains 2 long base64-like blob(s).
`javascript_obj0007_001.js` `dccf589f87e94b4de04276daac1c41cf4bfbdaadbd051606bea04937691ba50d`	pdf-javascript-stream	PDF /JS object 7 at offset 0x2A5	3175 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).

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