PDF malware analysis — malicious · dc35b49b5d742eb9

MALICIOUS

PDF

12.3 KB

MD5: e9a61e59ffedfd765e6bec8e4b5bcd2b SHA-1: f0ae12de0c3717fe0258fe743100b57ecfe1e95a SHA-256: dc35b49b5d742eb940b7297d265bcfb8cadd483d6fe77a8a0b4c8c6d078e8629

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link

The PDF file contains embedded JavaScript, identified by multiple heuristics including PDF_JAVASCRIPT and PDF_JS. The critical CVE_2007_5659 heuristic indicates the exploitation of a known vulnerability using JavaScript that is constructed by concatenating specific fields and extracting characters at a fixed stride. The ClamAV detection of Pdf.Exploit.Agent-36062 further confirms its malicious nature. The presence of deobfuscated JavaScript files suggests the sample is designed to download and execute additional malicious content.

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` `d4a07eed31fa57c7d6c7c3b7820a0bbb024c9764926871f1fbc43d3687208d59`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	12110 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `d1754a5f89313867e827bd35de805a75bf57c6595690fa8daed5ae540bb2e96f`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	4944 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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