PDF malware analysis — malicious · ba25bec9cf77b938

MALICIOUS

PDF

12.4 KB

MD5: cf28808f359bd88217b0e5a4bda67299 SHA-1: a04cf63ffd936d2fe49c705534c8e6b330a5ea56 SHA-256: ba25bec9cf77b938cc4fed905ac392e40ef057f497775ab39fbbbf4857f3fa27

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript/JScript T1204.001 Malicious Link/Object

This PDF file contains embedded JavaScript that exploits the CVE-2007-5659 vulnerability. The JavaScript is obfuscated and likely intended to download and execute a secondary payload, as indicated by the presence of deobfuscated JavaScript files extracted during static analysis. 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` `78593474713bd7eee5926f80aece435b6a41994cbe0d86135719eea482395c0d`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	12162 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `c4e5b068be36a412040c7939eed1499e7354ca92a1f43fd2db70060a385b7a0b`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	4975 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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