PDF malware analysis — malicious · ab734cc4289e777d

MALICIOUS

PDF

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

MD5: 0e222d427e85d0b50860c4260da378e6 SHA-1: 6a1027170ebc861ed7ab1f46475f9e1dd2d3f39a SHA-256: ab734cc4289e777db3659ea24e0dee188fe1910660082ffcc2a43a49d94d1cc8

218 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript and is configured with an OpenAction trigger, indicating an attempt to automatically execute code upon opening. Critical heuristics indicate the exploitation of CVE-2007-5659 (Collab.collectEmailInfo) and CVE-2008-2992 (util.printf), which are known methods for executing arbitrary JavaScript within a PDF. The presence of JavaScript actions and streams, along with the specific CVE exploits, strongly suggests the document is designed to download and execute a secondary malicious payload.

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` `a49d59fa230676a7fb5a0d2fdb891fcfa1c28fa5de44708f69c2057f878a46a5`	pdf-javascript-stream	PDF /JS object 13 at offset 0x3D4	3776 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 16 eval/decoder/string-building token(s).

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