PDF malware analysis — malicious · 2fa1195af9c6a3f2

MALICIOUS

PDF

12.1 KB

MD5: 11efa94c27de6576256dad89bd494c99 SHA-1: 781140051d659d6ccd5591718e29c0e3b0fc0715 SHA-256: 2fa1195af9c6a3f2dd8ac7dcc9dc91ad037952c30fc4fdde746f3437058caec0

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link

The PDF file contains embedded JavaScript, identified by the CVE_2007_5659 heuristic which specifically targets the 'collab.collectEmailInfo' JavaScript function. This function is known to be used in PDF exploits to execute arbitrary code. The embedded JavaScript streams and deobfuscated JS files indicate a multi-stage loading process, typical of exploit kits attempting to download and execute further payloads. The ClamAV detection further confirms its malicious nature.

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` `9c02b04e570c98f0ee4641fac870de6245da75cc8c7ab5cd0ae97b524396e53f`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	12444 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `aa8b50af5ae1e101f09753677f0c4bcc358887f058a57d8ae2898d8b796abbe5`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	5147 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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