PDF malware analysis — malicious · 3f510aa827e9f4d4

MALICIOUS

PDF

3.0 KB Created: 2008-31-20 53:85:00 Authoring application: Scribus 1.3.3.12 (via Scribus PDF Library 1.3.3.12)

MD5: cd4ff8641c1b8917be372c6a12f77622 SHA-1: 049f025cc05a1011786fdb88ddce6cfce634e5db SHA-256: 3f510aa827e9f4d4fca11251f32ab7c158e280a3b494d66f599177502723aeca

218 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript/Shell T1204.002 Malicious File T1566.002 Spearphishing Attachment

The PDF file contains embedded JavaScript triggered by an OpenAction, exploiting CVE-2007-5659 (Collab.collectEmailInfo) and CVE-2008-2992 (util.printf). These vulnerabilities allow for arbitrary code execution. The embedded JavaScript, named javascript_obj0013_001.js, is likely responsible for the malicious payload delivery, although its specific actions are obfuscated. The file is identified as malicious with a high risk score.

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)
util.printf — CVE-2008-2992 critical CVE exact CVE_2008_2992

PDF JavaScript calls util.printf() — CVE-2008-2992 is a stack buffer overflow in Adobe Reader triggered by a long format-specifier argument. Widely exploited in the wild after disclosure. (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` `bb469eb3487dfe55be86aaa16df29cfad8dcf67ca88bba8521315cde6d228a87`	pdf-javascript-stream	PDF /JS object 13 at offset 0x3D7	4178 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 16 eval/decoder/string-building token(s).

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