PDF malware analysis — malicious · 928fe8849f3a69c4

MALICIOUS

PDF

12.4 KB

MD5: c3fb2d191f1a05a8da1f4a5a0fe509fc SHA-1: 625933f582aee2dbc069941a998359b464cdb464 SHA-256: 928fe8849f3a69c4010b1fa408644cca7d02fe950c44dc0a47be2b30e2912433

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript/JScript T1204.002 Malicious File

The PDF file contains embedded JavaScript, specifically identified as exploiting CVE-2007-5659 via the Collab.collectEmailInfo method. This JavaScript is further processed into two deobfuscated files, legacy_pdfkit_stage_000.js and legacy_pdfkit_stage_001.js. The ClamAV detection of Pdf.Exploit.Agent-36062 confirms the malicious nature. The embedded scripts are likely responsible for downloading and executing a second-stage payload.

Heuristics 5

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)
ClamAV: Pdf.Exploit.Agent-36062 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36062
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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0007_000.js` `068944f8c011a88ab770b45c6de142b9305a1f515d410204d5eadd9ac2b5bfb3`	pdf-javascript-stream	PDF /JS object 7 at offset 0x19B	373 bytes
`legacy_pdfkit_stage_000.js` `0f2d77a3b7aa5b89d7bd0134e9fb8a01eba4f1faf92c69097289218962a49b76`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	12200 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `aeed34525a4e2577df2cc059d71d7bc64b3b04f7c535bc2f74bcfa9d826feb9c`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	5030 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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