PDF malware analysis — malicious · 30df1d365a12aa65

MALICIOUS

PDF

19.1 KB

MD5: 2750ecf2f14e903ef0b664e8feb3f173 SHA-1: 41f908800d065197efa82043fc56167bed6c5837 SHA-256: 30df1d365a12aa65772c00b8b5cc1d757b3ee00e689ec03584bb07f8a192b275

118 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript T1204.002 Malicious Link

The PDF file contains obfuscated JavaScript that utilizes the `eval()` and `unescape()` functions, indicative of malicious intent. The critical heuristic firing for CVE-2009-0927 specifically points to the exploitation of the `Collab.getIcon` method. This JavaScript is designed to download and execute a second-stage payload, likely exploiting a known vulnerability in older versions of Adobe Reader.

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` `f4368541d1dece1863ae8eda76f82ef6c7f4f8f736cde86f23847c55806eac2b`	pdf-javascript-stream	PDF /JS object 111711 at offset 0x18E	3190 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` `c08fcb3efad4949af9631e1c8fd56e7d8904d8f120bfc1323ca4a47c262ed39e`	pdf-javascript-stream	PDF /JS object 111712 at offset 0xE3A	14058 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` `627f1a91ab288841b373b9a4c2809873e196dc7664a37d41addff84026d39058`	pdf-javascript-stream	PDF /JS object 111713 at offset 0x455A	1745 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` `a7bf9e8f3472d8e456111af54d3cbfd9bd06c7e59489254ed4481e1c4d057ace`	deobfuscated-js	multi-marker percent-array decoded JavaScript at offset 0xE3A	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` `1397a77c63e5e8be02a059fd3c671fb708b92cb64d00ded4f2045e71093dec16`	deobfuscated-js	multi-marker percent-array decoded JavaScript at offset 0x455A	99 bytes
`legacy_pdfkit_stage_002.js` `1e2aca096a53a3ba74fdd95902148a53e56dda72c69be0ece29c381e85036fe9`	deobfuscated-js	multi-marker percent-array combined decoded JavaScript at offset 0xE3A	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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