PDF malware analysis — malicious · eab89861eccc92d2

MALICIOUS

PDF

21.3 KB

MD5: c4514cf5f2ca8f534b2b6c6fe323d66f SHA-1: 0564b68a46d052824c6fe3b2676003bea67ee11d SHA-256: eab89861eccc92d27ff352a2559012e3d522712eafb9b885371dea916a47d6f1

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-2009-0927 confirms the exploitation of a known Adobe Reader vulnerability. The script likely downloads and executes a second-stage payload, as suggested by the embedded JavaScript streams and deobfuscated JS files.

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` `429ad1790416754b358a49d81fb294120e153120e01d59c6594c56bb52f8bdb5`	pdf-javascript-stream	PDF /JS object 111711 at offset 0x18E	3760 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` `1fb7150398744cc68250e49715fb27704dad1beea462e1658a00ca4c51bb0fde`	pdf-javascript-stream	PDF /JS object 111712 at offset 0x1074	15895 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_obj111713_002.js` `6a8c72e5d5e25dbe199a5d4a9f840466415652be56c42e958cb0aa9b76506615`	pdf-javascript-stream	PDF /JS object 111713 at offset 0x4EC1	1580 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` `42c6e0dfc1b4e08e336adc8028ccac82b04e3e6e9e4d4a4ebc532ab6cd132eec`	deobfuscated-js	multi-marker percent-array decoded JavaScript at offset 0x1074	1520 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` `95d52c265d60ffad372da99bb3db5c3f0b48fc84b1aaa90902895f12786cdc82`	deobfuscated-js	multi-marker percent-array decoded JavaScript at offset 0x4EC1	99 bytes
`legacy_pdfkit_stage_002.js` `82baf83c245d2823a5fa2fdd812a45c171a1eb272143e00b062f225348025f4c`	deobfuscated-js	multi-marker percent-array combined decoded JavaScript at offset 0x1074	1620 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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