PDF malware analysis — malicious · e98e432621093db1

MALICIOUS

PDF

12.3 KB

MD5: 333c7baf8df6933f8b83a3ae2ba82a60 SHA-1: ecdea3f3df9ef5430b5cf2f81cb837c37204c5fb SHA-256: e98e432621093db172d500c69ab1cc78f3d4bc48b44aaee6607d2e8571679265

78 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript, triggered by the Collab.collectEmailInfo function, which is associated with CVE-2007-5659. This JavaScript is likely used to download and execute a secondary payload. The presence of deobfuscated JavaScript files suggests a multi-stage attack. Confidence is high due to the specific exploit identified and the presence of executable script content.

Heuristics 4

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)
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` `c5a609b518ff04ed78611cbb1127dd495e5cce9506ab91d495a8d9aafb070026`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F0	12171 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `fd4b7e6fd5c52e0b727d6141419de05cc20cab549c185c312bc1e9e49b320011`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F0	4957 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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