PDF malware analysis — malicious · 2042752a7e39a2d5

MALICIOUS

PDF

12.8 KB

MD5: c1d18fcb05df39be4f6f87b263139070 SHA-1: f40089329200895fb88cec657e943134ceae3e46 SHA-256: 2042752a7e39a2d5c6027d34ca36d91289cf7de115a70aff0faecf6cb98c9523

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript, flagged by multiple heuristics including CVE-2007-5659 which specifically targets the Collab.collectEmailInfo JavaScript function. This function is known to be used in exploits that download and execute arbitrary code. The presence of deobfuscated JavaScript files further indicates malicious intent. The primary attack vector appears to be exploiting a known PDF vulnerability to achieve code execution.

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` `c77f543affd436441e1bdecbf219600c54c37bc0a3f3634c19ddf2dd7c75f6b8`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	12414 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `94d6c30f8fd437e6c3eccb17ee891e9a93f7034b20a359be456b285875683c89`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	5188 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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