PDF malware analysis — malicious · 3e8a71cd6de17453

MALICIOUS

PDF

4.7 KB Created: 2002-03-27 12:02:13 Authoring application: Aladdin Ghostscript 5.10

MD5: 4e6278b10efffd732d0a1d9378465cc4 SHA-1: 62ee874fd9196632201442ac8adc42719ff6177e SHA-256: 3e8a71cd6de174532fee9dc4df8d5acc4d4a5afc57108fb768be38441fc4ca01

276 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript that utilizes the `Collab.collectEmailInfo` function, which is associated with the CVE-2007-5659 vulnerability. This indicates the document is designed to exploit this flaw. The embedded JavaScript stream, identified as `javascript_obj0012_000.js`, is likely responsible for downloading and executing a secondary payload, as suggested by the ClamAV detection of 'Win.Trojan.Agent-36171' on both the original PDF and an extracted artifact. The presence of JavaScript actions and the unescape() call further support the malicious intent.

Heuristics 7

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. (matched in decompressed stream)
ClamAV: Win.Trojan.Agent-36171 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Win.Trojan.Agent-36171
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.
unescape() call high PDF_UNESCAPE

unescape() found — often used to decode shellcode in PDF JS exploits (matched inside decoded stream)
Suspicious extracted artifact high 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.
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.

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0012_000.js` `dc99f5349ced4c5929ae8d8eb4a95467ca3ea7d363420f1c11950ad3aaa5830d`	pdf-javascript-stream	PDF /JS object 12 at offset 0xCDF	1688 bytes
Detection ClamAV: Win.Trojan.Agent-36171 Obfuscation or payload: likely Carved artifact contains 4 eval/decoder/string-building token(s).

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