PDF malware analysis — malicious · 566bb2d2b3efdd66

MALICIOUS

PDF

12.5 KB

MD5: a63e78366b22c1d8b7164a82785c6c3f SHA-1: 0729869773c05590757e456e02434abc43e00aa7 SHA-256: 566bb2d2b3efdd66f8e7eb4d904b2f29c837e7e764bce518a271b9a66951d342

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The file is a PDF containing embedded JavaScript, flagged by multiple heuristics including a critical alert for CVE-2007-5659. The JavaScript is further obfuscated and split into multiple files, indicating an attempt to conceal its malicious actions. The primary function appears to be exploiting this vulnerability to execute arbitrary code, likely for downloading and running a secondary payload.

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` `c18c549a1c226a1e5dd65695c0976ae00c51f1a4be6e1dcd296360780bda1f23`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	12150 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `1d0b66b8ba641ef0f291ba0b1c9d5420d49397564f81513aa0e0aea5c2409f1f`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	5066 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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