PDF malware analysis — malicious · ee7844ddcf2a99de

MALICIOUS

PDF

19.9 KB

MD5: 19ef60d4b075969b6c48bae1a33c3b1a SHA-1: 51fd55f8f748d76bccf134085165d8882c67bb80 SHA-256: ee7844ddcf2a99de62f87468987337f2293e476a9f0aec192e4eb2ba9b406c63

118 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link

The PDF file contains obfuscated JavaScript that leverages the Collab.getIcon method, a known indicator for CVE-2009-0927 exploitation. The script uses multiple layers of encoding and eval() calls, typical of exploit kits attempting to download and execute further stages. The presence of multiple deobfuscated JavaScript files further supports this. The exact second-stage payload or download URL could not be definitively reconstructed due to the obfuscation.

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` `527fe5e43318667b32bd607f4efd2178d497becbc0d5f6e652c90d248b326667`	pdf-javascript-stream	PDF /JS object 111711 at offset 0x18E	3257 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_obj111712_001.js` `9f19fd7c2532ad7a8714d12f46599711f1927daafc4bd114d44416686255cee9`	pdf-javascript-stream	PDF /JS object 111712 at offset 0xE7D	14692 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` `fd48f6f6ea3f6614cb6bb8ffb027b3db8d655a2e67da4d43e738b6126fa87105`	pdf-javascript-stream	PDF /JS object 111713 at offset 0x4817	1835 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 0xE7D	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` `e9d776c22832a7dd8aa871fcf388fef274b0443b70dc9143ff0648c327745c6c`	deobfuscated-js	multi-marker percent-array decoded JavaScript at offset 0x4817	108 bytes
`legacy_pdfkit_stage_002.js` `aa24a69a7a7e68f83d0001432d9f1096f6e11f428b9901ebcd1e60ecada953cc`	deobfuscated-js	multi-marker percent-array combined decoded JavaScript at offset 0xE7D	1629 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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