PDF malware analysis — malicious · 02d10db60cac02ac

MALICIOUS

PDF

8.1 KB Created: 2009-06-29 17:20:36 Authoring application: Vivuwabonxe

MD5: 4717c67b466381f12c38a8863d44b0e4 SHA-1: 1b734bbe1a01cf968dcf8fbbb689f31db3dd5009 SHA-256: 02d10db60cac02ac720548844cb358193d7b64fa4859b0736066c4731873c94a

468 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client Execution T1059.007 JavaScript

This PDF file contains embedded JavaScript that triggers known vulnerabilities in Adobe Reader (CVE-2009-0927 and CVE-2007-5659). The JavaScript is heavily obfuscated but appears to be designed to download and execute a secondary payload. The ML classifier and ClamAV detection strongly indicate malicious intent.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 11

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)
Collab.collectEmailInfo — CVE-2007-5659 critical CVE exact CVE_2007_5659

PDF JavaScript calls Collab.collectEmailInfo — CVE-2007-5659 is a buffer overflow in Adobe Reader triggered by a long argument or heap-sprayed message field passed to Collab.collectEmailInfo(). Part of a series of Acrobat JS API exploits. (identified after JavaScript deobfuscation)
PDF JavaScript exploit cluster critical PDF_JS_EXPLOIT_CLUSTER

PDF combines an executable JavaScript/action surface with exploit staging indicators such as eval/unescape/fromCharCode, XFA script content, or a related CVE pattern. Benign form JavaScript remains low-severity, but this correlated cluster is high-confidence malicious behavior.
ClamAV: Pdf.Exploit.Agent-35603 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-35603
ClamAV detection on extracted artifact critical EXTRACTED_FILE_CLAMAV

ClamAV flagged at least one file extracted from inside this sample. Even when the wrapping document carries no AV detection of its own, a hit on the carved artifact is a strong indicator the sample is a delivery vehicle.
eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution (matched inside decoded stream)
unescape() call high PDF_UNESCAPE

unescape() found — often used to decode shellcode in PDF JS exploits (matched inside decoded stream)
Generic recovered JavaScript exploit stage high PDF_GENERIC_STAGE_RECOVERY

Bounded static stage recovery exposed hidden JavaScript through generic transforms such as null-byte collapse, percent decoding, marker replacement, arithmetic character codes, fromCharCode, numeric arrays, numeric-array minus-key decoders, alphabet-index arrays, /Producer half-difference metadata arrays, hex literals, marker-stripped Base64 literals, custom 6-bit XOR table decoders, or repeated-marker hex carriers. This rule is emitted only when the recovered stage contains exploit-like Acrobat JavaScript or shellcode markers.
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_obj0007_000.js` `27383cfdf86cc2614522f57cae5ea3aef3d35ceca53e9ba486120453c3c93abe`	pdf-javascript-stream	PDF /JS object 7 at offset 0x4E1	6372 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 11 eval/decoder/string-building token(s).
`generic_stage_recovery_000.js` `64982c52bfa7e3302bd83741ee4817fdb7cdb53cee0def4249ef042ac33c4e86`	deobfuscated-js	generic stage recovery split-literal-normalize from raw PDF metadata at offset 0x0	8080 bytes
Detection ClamAV: Pdf.Exploit.Agent-35603 Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`generic_stage_recovery_001.js` `a65885c2fb82ac2fa66a55c46a4605d8fae306cef55a1362b23d6add70636554`	deobfuscated-js	generic stage recovery split-literal-normalize from JavaScript object 7 at offset 0x4E1	6129 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 11 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).
`generic_stage_recovery_002.js` `0cfa80a975d03040694f8027ac13d419596d9ca486a8ddcebd4761ec54b528c8`	deobfuscated-js	generic stage recovery split-literal-normalize from decompressed stream at 0x125F at offset 0x125F	2724 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 11 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).
`generic_stage_recovery_003.js` `b6caa04f44ba70c56b1c1b96d0c67bbe0c83185d4dd9e974f501e5e7fc8cb4ed`	deobfuscated-js	generic stage recovery split-literal-normalize -> percent-decode from raw PDF metadata at offset 0x0	8076 bytes
Detection ClamAV: Pdf.Exploit.Agent-35603 Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`generic_stage_recovery_004.js` `1844f3baf17514b55dfadb8498ebced3236bf175b1243bf255cdae51200b8055`	deobfuscated-js	generic stage recovery split-literal-normalize -> percent-decode from JavaScript object 7 at offset 0x4E1	6125 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 11 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_000.js` `9c33c9ab64bb3440b9f04b04907f8b138b976c1946b92e723714f7519c8d4a17`	deobfuscated-js	string-concatenation normalized Acrobat API aliases at offset 0x4E1	567 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 long base64-like blob(s).

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