PDF malware analysis — malicious · edd1814611e52232

MALICIOUS

PDF

21.2 KB

MD5: 48b5f15eb587724fda8bdadf0426e4a6 SHA-1: 64ad52d01d2aa94a5c9aa6e7721537ac74e824e6 SHA-256: edd1814611e52232171234ce1cc3dd33c5b438f7bad243f1e909b076381dcc60

118 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link

The PDF file contains obfuscated JavaScript that utilizes eval() and unescape() functions, indicative of exploit code. The heuristic CVE_2009_0927 specifically points to the Collab.getIcon sink, a known vector for exploiting Adobe Reader. The script likely downloads and executes a second-stage payload, although the exact URL is obfuscated within the script's string concatenation.

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` `7d08b34b71419b75336e141c5ccc9d353a7cb86cc7284d3fe6b3ee24448194da`	pdf-javascript-stream	PDF /JS object 111711 at offset 0x18E	3648 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` `bf087a8a6bcbf5a309453509db784e5d7dcd7e0dcb038a104cdca14753817d1c`	pdf-javascript-stream	PDF /JS object 111712 at offset 0x1004	15520 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` `f06a0a2aae0c4aec81635b20bae9a41faaef17e631b310dc182f691499b062b5`	pdf-javascript-stream	PDF /JS object 111713 at offset 0x4CDA	1912 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 0x1004	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` `ae900f910ca648d5563fc56e85c71018a1725e3125a5b9d7e3801e07a14dfb15`	deobfuscated-js	multi-marker percent-array decoded JavaScript at offset 0x4CDA	106 bytes
`legacy_pdfkit_stage_002.js` `a029336a22c10c18fb7ed5c54a887bfb618b35a429dfaa37b4167fe886371ddb`	deobfuscated-js	multi-marker percent-array combined decoded JavaScript at offset 0x1004	1627 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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