PDF malware analysis — malicious · 2732582f80db12bf

MALICIOUS

PDF

22.1 KB

MD5: 81abeebf92f42f22af5bc140c79c7c5e SHA-1: 722324164052a5ece15632eb7795755b38f7a133 SHA-256: 2732582f80db12bff35b7f8640ec93fa8c5af5cd6bd7858b00e835de1cc79786

118 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript that utilizes eval(), unescape(), and String() functions, indicating an attempt to obfuscate malicious code. The critical CVE-2009-0927 heuristic firing confirms the exploitation of a known Adobe Reader vulnerability via the Collab.getIcon method. The deobfuscated JavaScript streams suggest the script's primary purpose is to download and execute a second-stage payload from a remote source, a common technique for delivering malware.

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` `ad8593c09837a527f8ed556a20988df9507aff01bea53304d4ac05c23780c309`	pdf-javascript-stream	PDF /JS object 111711 at offset 0x18E	2808 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` `34647de0c54a40b684a30a2432c51abf77f4b7dba13b56bee0bdfa7ba4758fc7`	pdf-javascript-stream	PDF /JS object 111712 at offset 0xCBC	17792 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` `6c0117fdd2eb8b23068ee673e58eb99552a50c48de29199a9d7185ed34e8dc32`	pdf-javascript-stream	PDF /JS object 111713 at offset 0x5272	1480 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).
`legacy_pdfkit_stage_000.js` `ec8c134440a9651f3a45a593845bf208445ebaebf6b126d314c8ef3b6649d4a3`	deobfuscated-js	multi-marker percent-array decoded JavaScript at offset 0xCBC	1521 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 0x5272	99 bytes
`legacy_pdfkit_stage_002.js` `184b3fff689b91861d96792016bdb3afd06fbc3a1e3008904b8d5106c94da580`	deobfuscated-js	multi-marker percent-array combined decoded JavaScript at offset 0xCBC	1621 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

Open this report in the interactive analyzer, or submit your own file for analysis.