PDF malware analysis — malicious · d9ab99b335dcb355

MALICIOUS

PDF

11.9 KB

MD5: ffd05161106890e599c349937172dd32 SHA-1: c685cb59b4618e134af998c19dc1e77ef3323d2c SHA-256: d9ab99b335dcb3553c7340a063f188e136d8c8a3f1a84fb468dc6321913509f3

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link

The PDF file contains embedded JavaScript, identified by multiple heuristics including PDF_JAVASCRIPT and PDF_JS. The critical CVE-2007-5659 heuristic indicates the exploitation of a known vulnerability using the Collab.collectEmailInfo function to execute JavaScript. This JavaScript is further processed into two deobfuscated files, legacy_pdfkit_stage_000.js and legacy_pdfkit_stage_001.js, suggesting a multi-stage attack. The primary intent appears to be the execution of malicious code via a PDF vulnerability.

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-36065 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36065
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` `9c67560e8c63b720885d3efc1627b844b86a6ec08e99e5b65a22eae832045756`	pdf-javascript-stream	PDF /JS object 7 at offset 0x19C	431 bytes
`legacy_pdfkit_stage_000.js` `c4b6bd23fd6d251b24281b734b866f56fae0a0011084f11761247a40eb182104`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x315	12348 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `df9b4bef7b231e81eff78e287df28d1528400af4f1f5f05b2ed0d7e29f59061d`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x315	5100 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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