PDF malware analysis — malicious · a8680ef7c2836cf8

MALICIOUS

PDF

12.5 KB

MD5: a273a7808eb10e90ddf1514532540985 SHA-1: 44214b007e059e59c0745e670cfa8662f6a684ed SHA-256: a8680ef7c2836cf8518bff84e29c32fd8a6d9f628e2eb34f7776dfe1880d95a5

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript, identified by multiple heuristics including PDF_JAVASCRIPT and PDF_JS. A critical heuristic, CVE_2007_5659, indicates the exploitation of a known PDF vulnerability using JavaScript. The ClamAV detection further confirms its malicious nature as Pdf.Dropper.Agent-7290654-0. The presence of deobfuscated JavaScript files suggests the script's purpose is to download and execute further stages of malware.

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.Dropper.Agent-7290654-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-7290654-0
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` `1847af0a099665b6ac45af66402e56ed64237a1b287618ee3d6643267fda6f35`	pdf-javascript-stream	PDF /JS object 7 at offset 0x19D	343 bytes
`legacy_pdfkit_stage_000.js` `528e737e8509ca99aec5d65a3c87dd08251502e1d69d6dd6236928d7937220fe`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F0	12226 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `5071457727f63b96f425d0b9f130a1d806412f738895bb5f02695559ee0992ae`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F0	5061 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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