PDF malware analysis — malicious · a9b79e7c06d5eaa9

MALICIOUS

PDF

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

MD5: 7acbb4b33812ee3c51b7a8e986f2e407 SHA-1: 72aa460a2d297c8e3d1b983f5ca42f50c201b7d0 SHA-256: a9b79e7c06d5eaa939bda54e83b8c5795a315e89e7618af1923506064d3e17c8

216 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript/JScript T1204.002 Malicious File T1071.001 Web Protocols

This PDF document contains embedded JavaScript that is triggered automatically upon opening, leveraging the CVE-2007-5659 vulnerability. The JavaScript is obfuscated using `eval()` and `String.fromCharCode()`, and its primary function appears to be downloading and executing a secondary payload. The extracted artifact names suggest a multi-stage approach.

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. (identified after JavaScript deobfuscation)
OpenAction trigger high PDF_OPENACTION

PDF has an /OpenAction — code runs automatically when opened
eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution (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.
String.fromCharCode medium PDF_FROMCHARCODE

String.fromCharCode found — used to construct payload strings dynamically (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.

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0013_001.js` `0d2bfc8048743a08c1c205bb0beaf4f469cbd4d4f0082d337b231f9a2453fefd`	pdf-javascript-stream	PDF /JS object 13 at offset 0x3D7	14049 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 4 eval/decoder/string-building token(s).
`numeric_charcode_stage_000.js` `1069be89000a3fd8872160195c0c5b7673b5c6ba99a7efe0b1fc504c738ab985`	deobfuscated-js	numeric char-code string decoded JavaScript at offset 0x445	4272 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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