PDF malware analysis — malicious · df20559d747b1ad9

MALICIOUS

PDF

12.8 KB

MD5: 065a1455c5c09cd288f2c59760c94d0d SHA-1: 58e83dfcc3f00a0c78622d9c1af78295c51f8166 SHA-256: df20559d747b1ad9d3220d043cfac3dbb15b0c47ba8fb39ebf12128a9acee78a

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript that exploits the CVE-2007-5659 vulnerability, specifically targeting the Collab.collectEmailInfo function. This exploit is designed to execute arbitrary code, as indicated by the critical heuristic firings and the presence of deobfuscated JavaScript streams. The primary function of the embedded script is to download and execute a secondary payload, which is a common technique for initial access and further system compromise.

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` `1e9c64a4daa6fb54a1d46b65cc9248d99af4920deada35be19161ea9b2d032b8`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	12534 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `4c700214e0dba34384521a52caee7950c34abf4ff75c7189c9dbe364552e575d`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	5172 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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