PDF malware analysis — malicious · d09787214e073292

MALICIOUS

PDF

9.2 KB

MD5: 7ba0614b5bc8998ae603a00eb9be045e SHA-1: 2fb0a3d692f582ee0a933a93e558f0c285a47e7a SHA-256: d09787214e0732926e68d6dc2417c106e1de567659199a71d19a5950dd89c261

178 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript T1204.001 Malicious Link T1059.003 Windows Command Shell

The PDF file contains embedded JavaScript that leverages the CVE-2007-5659 vulnerability (Collab.collectEmailInfo). This vulnerability is known to be used for arbitrary code execution within Adobe Reader. The extracted JavaScript streams, particularly 'legacy_pdfkit_stage_000.js', indicate obfuscation and likely payload delivery. The ClamAV detection 'Pdf.Exploit.Agent-35905' further confirms the malicious nature of the file.

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-35905 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-35905
unescape() call high PDF_UNESCAPE

unescape() found — often used to decode shellcode in PDF JS exploits (matched inside decoded stream)
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` `d8a6b4ad1abf04d0c4a4f89535cfb57f7312edef25c443f4e844c8ec9d0929dd`	pdf-javascript-stream	PDF /JS object 7 at offset 0x19B	352 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` `d75285f356f1aed55db275c3310366ed6b8425b1c797a60048165ab9ff8d73b6`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2FE	11769 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `76e17679cdc29470c63b30a16dc52dc09cf743549da99cdddf32ae7f5962c80b`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2FE	4893 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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