PDF malware analysis — malicious · bdc9d0b5a7402bc6

MALICIOUS

PDF

2.7 KB Created: 2008-14-12 03:25:50 Authoring application: Neon v.1.0.5 ru (via Neon v.1.0.5 ru PDFLib)

MD5: 4ab268296b4ee85722be9efd95190dbd SHA-1: f97a09908139413b8417a135738809aeb8b03dfe SHA-256: bdc9d0b5a7402bc608d559daba8d4188486cc6c92d1feeb0d9348cb550f61024

196 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File T1071.001 Web Protocols

The PDF file contains embedded JavaScript and is configured with an OpenAction to trigger its execution upon opening. The critical CVE-2007-5659 heuristic indicates the use of the Collab.collectEmailInfo method, a known vector for exploiting PDF vulnerabilities. The embedded JavaScript, named 'javascript_obj0013_001.js', is likely responsible for downloading and executing a secondary payload, which is a common technique for initial access.

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)
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_obj0013_001.js` `c991c6ce80a61742ddc7fd99f62928547c17def1b6d4e64ea749602ef025d61a`	pdf-javascript-stream	PDF /JS object 13 at offset 0x368	3285 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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