PDF malware analysis — malicious · d6e28712059a9c5b

MALICIOUS

PDF

20.7 KB

MD5: 1c22e5bf37db060f72de0ebef1ac280d SHA-1: 639e4446f9bfc84b468ef578fad8fac07d818aea SHA-256: d6e28712059a9c5b4674720609bb7ac153d3eb2111126c064301100df21bce5a

118 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link

The PDF sample contains obfuscated JavaScript, including multiple calls to 'eval()' and 'unescape()'. The critical heuristic firing indicates the use of 'Collab.getIcon' to trigger CVE-2009-0927, a known vulnerability in Adobe Reader. This exploit is designed to download and execute a second-stage payload. The script's intent is to leverage this vulnerability for arbitrary code execution.

Heuristics 5

Collab.getIcon — CVE-2009-0927 critical CVE exact CVE_2009_0927

PDF JavaScript calls Collab.getIcon — CVE-2009-0927 is a stack buffer overflow in Adobe Reader triggered by Collab.getIcon() with a crafted argument. Allows arbitrary code execution. (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` `48de14e74f4021ac4e5802c295580b6b7d0dddb49ada1bc5896c26fdf8ceaa74`	pdf-javascript-stream	PDF /JS object 111711 at offset 0x18E	3353 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).
`javascript_obj111712_001.js` `4931a8ad61a8d000dffb3e529488ba3502837cb9730769297ea3378d7e0612de`	pdf-javascript-stream	PDF /JS object 111712 at offset 0xEDD	15540 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s). Carved artifact contains 5 long base64-like blob(s).
`javascript_obj111713_002.js` `6005e962816c3f46adfdf7401400088cd068179b1cfb97d7504b5e8f0eef7167`	pdf-javascript-stream	PDF /JS object 111713 at offset 0x4BC7	1710 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` `b75693f583eca419695e44203aee635cf145b7085d6fb6e1a982b2a5b597c2ea`	deobfuscated-js	multi-marker percent-array decoded JavaScript at offset 0xEDD	1524 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` `1397a77c63e5e8be02a059fd3c671fb708b92cb64d00ded4f2045e71093dec16`	deobfuscated-js	multi-marker percent-array decoded JavaScript at offset 0x4BC7	99 bytes
`legacy_pdfkit_stage_002.js` `e977fb4a94fa43828c71f6586b9665a81f27206b90cfba63d751ea54172a3e14`	deobfuscated-js	multi-marker percent-array combined decoded JavaScript at offset 0xEDD	1624 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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