PDF malware analysis — malicious · 1341f2e0596296d6

MALICIOUS

PDF

7.9 KB Authoring application: Uauewikqoqi

MD5: 482d3ce5f645e9a8169d82e52f2398c4 SHA-1: 8fb20de4bc830f9a441d73dee20afd8dc8450b18 SHA-256: 1341f2e0596296d63dba61b0d6a0acd1f550c5265fc4ef13b00177ca42a2e854

468 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client Execution T1059.007 JavaScript T1566.001 Spearphishing Attachment

The PDF file contains embedded JavaScript that leverages multiple known Adobe Reader vulnerabilities (CVE-2009-0927, CVE-2007-5659, CVE-2008-2992) to achieve code execution. The deobfuscated JavaScript streams indicate a generic exploit stage designed to download and execute a secondary payload, characteristic of a downloader or initial access exploit.

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)
util.printf — CVE-2008-2992 critical CVE exact CVE_2008_2992

PDF JavaScript calls util.printf() — CVE-2008-2992 is a stack buffer overflow in Adobe Reader triggered by a long format-specifier argument. Widely exploited in the wild after disclosure. (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-35649 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-35649
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 6

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0007_000.js` `2df3adc839442e92b635469580253ee02e7e9a40c7baec65a614b21c29026963`	pdf-javascript-stream	PDF /JS object 7 at offset 0x455	6324 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` `5a04f1a353e24e052aea95483678c4b6b96751d0b4192526b257060e5e3148c3`	deobfuscated-js	generic stage recovery split-literal-normalize from JavaScript object 7 at offset 0x455	6057 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_001.js` `bcf815815117f4db145d9c65d1fa6a0f2b045bd5071cd423191c303fac645190`	deobfuscated-js	generic stage recovery split-literal-normalize from decompressed stream at 0x118F at offset 0x118F	2716 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` `7f213130b207b730f560527ca0ebe8a1a31e27a1892594ce1aa7c56e9a1a9fd5`	deobfuscated-js	generic stage recovery split-literal-normalize from decompressed stream at 0x118F at offset 0x118F	2687 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` `3a3d76d9d93a03391674ba3f0c00c3d5293d69ecb0fac8e8ac074243ddcf56b0`	deobfuscated-js	generic stage recovery split-literal-normalize -> percent-decode from JavaScript object 7 at offset 0x455	6053 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` `48f7a9c25b866023f2abe8fcb0dadbb108fd166c84b44ca37df3e044dea655e4`	deobfuscated-js	string-concatenation normalized Acrobat API aliases at offset 0x455	560 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 long base64-like blob(s).

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