PDF malware analysis — malicious · 35970cae26f8b931

MALICIOUS

PDF

12.6 KB

MD5: e19e6add7656e7b782e131c32938bd88 SHA-1: 5793a09a42566bd9c4131e684f9b9c20220d81e3 SHA-256: 35970cae26f8b9314ed9beb5a194bc1467cf12d18a23a1f44e5e1716f65b51d4

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript, identified by the CVE-2007-5659 heuristic which specifically targets the Collab.collectEmailInfo function. This function is known to be used in exploits that execute arbitrary JavaScript. The extracted JavaScript files suggest a multi-stage process, with the initial PDF likely acting as a loader for more complex scripts. The primary intent appears to be the execution of a second-stage payload, typical of exploit kit delivery mechanisms.

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` `9a9ec4798ace38967f6ca8add131efc955872ebee5369a74177ef62d658cbc89`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	12334 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `00ac227ef5c8cddd7e16f9fadedf3ba23145b18f753a682cb143ece6be4996b8`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	5068 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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