PDF malware analysis — malicious · d1fea999758a360b

MALICIOUS

PDF

9.1 KB

MD5: e741f9e1b02c0d11ab9097c6e16dc4e8 SHA-1: 6770ee406bff81d1dd369f5d7aea8ef153c88b00 SHA-256: d1fea999758a360bc2a08cd010ed6f1692853d06f37c38618d4e686a01ad8479

178 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link

The PDF file contains embedded JavaScript that leverages the CVE-2007-5659 vulnerability through the `collab.collectEmailInfo` method. This exploit is designed to execute arbitrary code, as indicated by the critical heuristic firings and the presence of deobfuscated JavaScript streams. The script's intent is to download and execute a second-stage payload, although the specific payload and its ultimate destination could not be fully determined from the static analysis.

Heuristics 6

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-35905 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-35905
unescape() call high PDF_UNESCAPE

unescape() found — often used to decode shellcode in PDF JS exploits (matched inside decoded stream)
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` `d8a6b4ad1abf04d0c4a4f89535cfb57f7312edef25c443f4e844c8ec9d0929dd`	pdf-javascript-stream	PDF /JS object 7 at offset 0x19B	352 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).
`legacy_pdfkit_stage_000.js` `9a95e219e9c2447f28863dbf94cb5aa749b17267e78742f248dc4b000434acbf`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2FE	11539 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `98c814b6bd9e7283c367508db81895f7618eaaebd9327476c21c448dcc11403d`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2FE	4838 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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