PDF malware analysis — malicious · 992471499193babb

MALICIOUS

PDF

12.7 KB

MD5: 20f3236b9885548ea350e2d4f3aa11b2 SHA-1: 82bcedded38e0ad3b3809940c471004dbca9cbf8 SHA-256: 992471499193babbebd3411c56f17f3d7d0e870de46bea7d79f6dc5069ffe353

140 Risk Score

Malware Insights

MITRE ATT&CK

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

The PDF file contains embedded JavaScript, identified by the CVE-2007-5659 heuristic which specifically targets the 'collab.collectEmailInfo' function. This function is known to be used in exploits that execute arbitrary JavaScript. The extracted JavaScript streams ('legacy_pdfkit_stage_000.js' and 'legacy_pdfkit_stage_001.js') suggest a multi-stage process, typical of malware delivery. The primary attack vector appears to be exploiting a vulnerability in PDF viewers to run malicious code.

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-36062 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36062
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` `068944f8c011a88ab770b45c6de142b9305a1f515d410204d5eadd9ac2b5bfb3`	pdf-javascript-stream	PDF /JS object 7 at offset 0x19B	373 bytes
`legacy_pdfkit_stage_000.js` `2228dd5125ca5901f109d6bb7d3b75b2f9763d773f3b604c20e63871fd57f89f`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	12381 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `02b8924852d53932fad12d42822e1e58fbd21dc0520f3638cbeae09e48e1e98b`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	5126 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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