PDF malware analysis — malicious · fc7e6be7a25e487b

MALICIOUS

PDF

2.8 KB Created: 2008-11-04 02:32:17 Authoring application: Scribus 1.3.3.12 (via Scribus PDF Library 1.3.3.12)

MD5: f8f4376d76ae441676bdfa2af0b1d620 SHA-1: 365feb502ee2405bb7f703cf9cc0f53f7e2511bd SHA-256: fc7e6be7a25e487b4c7a416ddc6ddce1f3b01514aef5cc84cf604c884920f218

158 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link

The PDF file contains embedded JavaScript triggered by an OpenAction, indicating an attempt to exploit vulnerabilities. Specifically, the CVE-2007-5659 heuristic firing suggests the use of the Collab.collectEmailInfo method, a known vector for PDF exploits. The embedded JavaScript stream, further detailed by the 'javascript_obj0013_001.js' artifact, likely contains obfuscated code designed to download and execute a secondary payload. The use of unescape() is common in obfuscated JavaScript payloads.

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. (matched in decompressed stream)
OpenAction trigger high PDF_OPENACTION

PDF has an /OpenAction — code runs automatically when opened
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 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0013_001.js` `ee52e4cf93448561c0ca4a3ab84eb6309b24e8695091643dc753183dbbc8e497`	pdf-javascript-stream	PDF /JS object 13 at offset 0x369	2794 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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