PDF malware analysis — malicious · f5a26dd255b6d97c

MALICIOUS

PDF

12.3 KB

MD5: 070b69290043c13ce09adc76159a1dd6 SHA-1: cce8b535d8996591012a58deb49ca1c4dba68e4c SHA-256: f5a26dd255b6d97cad223a0ae5e1fb9a5eba2a312fe09f760d8d399fc72cbc45

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript T1204.002 Malicious File

The file is a PDF containing embedded JavaScript that exploits the CVE-2007-5659 vulnerability. The JavaScript is obfuscated and appears to be designed to download and execute additional malicious content, as indicated by the extraction of multiple JavaScript files. 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` `6f8eb8e302b414ecf290246cd5c9f97b8d024d13c724710f8d6df5b6c7716d61`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	12014 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `85120031c1d12bd3b39d1b127e0dec301a18a0f9f0222f346c83692234672aff`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	4878 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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