PDF malware analysis — malicious · 966712b26517f4ae

MALICIOUS

PDF

40.3 KB

MD5: 175a5b98458de51f464d71dbe12c3b1a SHA-1: 4b8ce32da00ef3600328ddd1009c0746947a5be6 SHA-256: 966712b26517f4ae1846b42919a40199f303c71ba39207afd5e77a0d7f5b2f0f

178 Risk Score

Malware Insights

MITRE ATT&CK

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

The PDF file contains embedded JavaScript and exploits the CVE-2007-5659 vulnerability via the `collab.collectEmailInfo` method. This JavaScript is likely used to download and execute a secondary payload, as indicated by the presence of deobfuscated JavaScript files and a U3D stream. The ClamAV detection further confirms its malicious nature.

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)
U3D/3D content in PDF — Adobe Reader 3D parser CVE-family indicator high CVE related PDF_U3D_CVE_RELATED

PDF contains U3D (Universal 3D) or 3D annotation content — CVE-2011-2462 and CVE-2009-3953 are critical vulnerabilities in Adobe Reader's U3D processing that allow arbitrary code execution. U3D content in PDFs is extremely rare in normal documents.
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 4

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 0x1A3	431 bytes
`legacy_pdfkit_stage_000.js` `6b40fb1457415fa054c26e7db3cacb471728859c2745b2e3f03daeb2934d2ba7`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x31C	13560 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `3231766995ec5688ccbd8ed4dd1930b55e240cde2d4e48ed3edc271a3a28c6e5`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x31C	5723 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).
`u3d_00_off000034c3.bin` `be9b6f51ccc10ed67099a2e70bdc0d7433f445b059ca7dff9f11d5199e632bb6`	pdf-3d-stream	PDF U3D 3D stream at offset 0x34C3	27444 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact entropy is 7.99, consistent with packed or encrypted content.

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