PDF malware analysis — malicious · b10e937e95a6abd1

MALICIOUS

PDF

19.2 KB

MD5: 70c0145f324630305ffae25c919132c4 SHA-1: 3db5c3dbf5a95e8c4b7fe5f4630c9e0dc9e2d724 SHA-256: b10e937e95a6abd196f592471be5651f9da7277e24f51f6a7214e4470f9bb356

118 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link

The PDF sample contains embedded JavaScript that utilizes eval() and unescape() functions, indicative of obfuscated code execution. The critical CVE-2009-0927 heuristic firing points to the use of the Collab.getIcon method, a known exploit vector for older Adobe Reader versions. The script's primary function appears to be the execution of further stages, likely involving the download of additional malicious content.

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` `ceab2db69968b42b0956fe7da45e9abe099aeef884f3fb85e0146423c60c30ef`	pdf-javascript-stream	PDF /JS object 111711 at offset 0x18E	3656 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` `bc377344354ab1c0302d6a2619147aa94ea86ca041ff8101924154c1083ba8cc`	pdf-javascript-stream	PDF /JS object 111712 at offset 0x100C	13760 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` `0e135bc77567c1e0be0d83e8b913079c90fefb4fe0768fabc6da57a20e8ff551`	pdf-javascript-stream	PDF /JS object 111713 at offset 0x4602	1650 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` `eba30515589f99084abd73293a7c494bc4fc5df35973158efcc1ab005243bf17`	deobfuscated-js	multi-marker percent-array decoded JavaScript at offset 0x100C	1525 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 0x4602	99 bytes
`legacy_pdfkit_stage_002.js` `d2dfa04296a2fcef65def81c38ab56ecc9058b73337d1a6c6d51acce2c4ee0bd`	deobfuscated-js	multi-marker percent-array combined decoded JavaScript at offset 0x100C	1625 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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