PDF malware analysis — malicious · 26549fabbfe530c2

MALICIOUS

PDF

19.6 KB

MD5: 756f8ee6e9718c45832c80c0613f606b SHA-1: 947cf7dbc25e347c94b99d7957971bd746b0a988 SHA-256: 26549fabbfe530c2c41666cd8d13dde166f6c83549bb1af82c54e5610d1d5ef8

118 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link

The PDF file contains obfuscated JavaScript, including multiple calls to eval() and unescape(), indicating an attempt to hide malicious code. The critical heuristic firing for CVE-2007-5659 confirms the exploitation of a known Adobe Reader vulnerability. The embedded JavaScript is designed to download and execute a second-stage payload, likely leading to further compromise.

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)
eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution
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 6

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj111711_000.js` `ce2849a9bd1f0296dc92c88406dddcbd7ce9dbcd2c0c8952a6c86cbfad2f2584`	pdf-javascript-stream	PDF /JS object 111711 at offset 0x18E	4037 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s). Carved artifact contains 4 long base64-like blob(s).
`javascript_obj111712_001.js` `d1e31478eb9631e40d0377d7a5abc29314eacb21d630310a6a355d8e206f5c43`	pdf-javascript-stream	PDF /JS object 111712 at offset 0x1189	13865 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s). Carved artifact contains 4 long base64-like blob(s).
`javascript_obj111713_002.js` `08b5fd30359a2c227b6e5c2eae02d92886cf29055054775f2ede4791134b27cb`	pdf-javascript-stream	PDF /JS object 111713 at offset 0x47E8	1552 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s). Carved artifact contains 6 long base64-like blob(s).
`legacy_pdfkit_stage_000.js` `739b13f0b99040e4fcf01de9738665c2b86144f5e81fc507f93a7d4c0821e8ae`	deobfuscated-js	multi-marker percent-array decoded JavaScript at offset 0x1189	1476 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).
`legacy_pdfkit_stage_001.js` `c1fcbafea81bfee712f996aa41c03e275317f67c6dea5dbff00d624d32d87167`	deobfuscated-js	multi-marker percent-array decoded JavaScript at offset 0x47E8	81 bytes
`legacy_pdfkit_stage_002.js` `e9a5bccbfa9a6305ce611fc8ad2ec3c13f490c1aa00d49a245d98c9215ea194c`	deobfuscated-js	multi-marker percent-array combined decoded JavaScript at offset 0x1189	1558 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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