PDF malware analysis — malicious · dbad100e8a8624a7

MALICIOUS

PDF

12.4 KB

MD5: a101e85679beaca0ed9cd4d556075e67 SHA-1: 06dc68a4fa5d58880a5e9bdb73a3ae955b46a28f SHA-256: dbad100e8a8624a74926243d6cbb4a1a4fc27bec9971e43172a41b6145ed1376

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link T1204.002 Malicious File

The file is a PDF containing embedded JavaScript, identified as malicious by ClamAV with the signature Pdf.Exploit.Agent-36062. Heuristics indicate the use of CVE-2007-5659, which involves JavaScript that concatenates strings and evaluates the result. This technique is commonly used to download and execute further malicious content. The extracted JavaScript files suggest a multi-stage approach, typical of exploit kits.

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` `6cbf31967dc414ac078f81d63952b1be7255add396f4af2cb144a35dba58bb98`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	12200 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `87301c44252b1b7633117671917d6acfcb6f4a81f4fb8ca51f0f39619b90bbe6`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	4974 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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