PDF malware analysis — malicious · d2f6d7c4c479657e

MALICIOUS

PDF

21.9 KB

MD5: 7910dc66bbbeb10e7585a62a9f4cb29a SHA-1: ed268d83f2f642d07c3ba158c33cec5dcbfcda68 SHA-256: d2f6d7c4c479657e93b1442c20db998a32a56f37e81439984c887518f42beb52

118 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link

The PDF file contains embedded JavaScript that leverages the CVE-2009-0927 vulnerability through the Collab.getIcon method. This technique is used to download and execute a second-stage payload. The obfuscated JavaScript and the use of eval() indicate a deliberate attempt to hide malicious activity.

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 7

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj111711_000.js` `ca669566034c0d4496eedb167dcc4b0cc564404230d902074fa5007f36e0a26f`	pdf-javascript-stream	PDF /JS object 111711 at offset 0x18E	3564 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` `6594152d2215835fcc5e5cb23bfae2f0d2f1241711f3e76e9ebeb85f3c17528d`	pdf-javascript-stream	PDF /JS object 111712 at offset 0xFB0	16549 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` `fa496dcee300b654ecf1a1ba22563ffaaa253e21bc47c14a046a65b74fd31311`	pdf-javascript-stream	PDF /JS object 111713 at offset 0x508B	1674 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` `3b1e8e55acc3485584a7fa854f1a9edaf1f41af52b68174162e5ea5995b9759f`	deobfuscated-js	double percent-decoded annotation JavaScript at offset 0xFB0	15827 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s). Carved artifact contains 9 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `a7bf9e8f3472d8e456111af54d3cbfd9bd06c7e59489254ed4481e1c4d057ace`	deobfuscated-js	multi-marker percent-array decoded JavaScript at offset 0xFB0	1520 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).
`legacy_pdfkit_stage_002.js` `95d52c265d60ffad372da99bb3db5c3f0b48fc84b1aaa90902895f12786cdc82`	deobfuscated-js	multi-marker percent-array decoded JavaScript at offset 0x508B	99 bytes
`legacy_pdfkit_stage_003.js` `7983f75ca58807096a192c0596a945b237533ae2d204b86f0eeae10c6011045b`	deobfuscated-js	multi-marker percent-array combined decoded JavaScript at offset 0xFB0	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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