PDF malware analysis — malicious · dedba07e171b0b27

MALICIOUS

PDF

12.1 KB

MD5: 0f1ab99aff603b9d10b665c42b9b2359 SHA-1: 3ae34b2f73c402f63bfaf4096799297b35eaa21c SHA-256: dedba07e171b0b27398679a30e49f07cb116a5b71e48182fe0faab5e582fe78c

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link

The PDF file contains embedded JavaScript, which is triggered by the 'Collab.collectEmailInfo' method, indicating an exploit attempt. The heuristics suggest this is a known exploit (CVE-2007-5659) likely used to download and execute a second-stage payload. The extracted JavaScript files, legacy_pdfkit_stage_000.js and legacy_pdfkit_stage_001.js, further support the presence of malicious scripting.

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` `75b9053af5c82204f25e53d9ae53799423f8f52c617c070d24c23538c632ed57`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	11898 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `7ef567f3a8194d2c2d982212034182ff46808c1f024e5b8a06ffaf21aa168034`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	4853 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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