PDF malware analysis — malicious · 7cc0d1db6e202943

MALICIOUS

PDF

12.8 KB

MD5: ffb97f692477c5038d2a2db4cfe0b2a1 SHA-1: 1f66151bddf6e2ce507648e15d10bb0ec7e5ad16 SHA-256: 7cc0d1db6e2029432c09e8404dd50418251a954eb2ce262aa4a3870bf05ee57b

138 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File Execution: Malicious File

The file is a PDF containing embedded JavaScript, identified as malicious by ClamAV (Pdf.Exploit.Agent-36062). The critical heuristic CVE_2007_5659 indicates the exploitation of a vulnerability using JavaScript that is constructed by concatenating info fields and evaluating the result. This suggests the script is designed to download and execute a secondary payload. No specific family could be identified.

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` `a562894553bd3afd72b27193d7028f405d09afbff04599ebcb3dbecb862dec0d`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	12501 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `4ae671ac891eb7efd060faed91fba6cf3ab1680ed5d751299dcf28421f5975b3`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	5193 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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