PDF malware analysis — malicious · 2e2a24406692696d

MALICIOUS

PDF

4.9 KB Created: 2010-07-30 08:34:51 Authoring application: Qoperohaxomauecoviy (via 5b542Riniuaruijoxe)

MD5: c6d07198fc690cd61d5882bda3d42095 SHA-1: da29e1916cafc9878c81096eb6bf2229bef67beb SHA-256: 2e2a24406692696ddcdb587a3f811406ecc40e1c27d0820e4938aae092dec03e

98 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1027 Obfuscated Files or Information

The PDF file contains obfuscated JavaScript, indicated by multiple heuristic firings including 'PDF_JAVASCRIPT', 'PDF_JS', 'PDF_EVAL', and 'PDF_PAGE_WORD_XOR_EVAL_STAGER'. The embedded JavaScript stream 'javascript_obj0011_000.js' is likely responsible for downloading and executing a second-stage payload. The obfuscation and stager behavior suggest a malicious intent, but the specific family cannot be determined from the available evidence.

Heuristics 5

eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution (matched inside decoded stream)
Page-word XOR JavaScript eval stager high PDF_PAGE_WORD_XOR_EVAL_STAGER

PDF JavaScript enumerates rendered page words with getPageNthWord/getPageNumWords, extracts encoded byte fragments, XOR-decodes the stage with char-code helpers, and evals the result. This is an old exploit-kit staging pattern and is not normal document JavaScript.
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_obj0011_000.js` `102bd53c3d5aca19d3fddf2959dd86439856f01b130576912f06ee24f2e34ef8`	pdf-javascript-stream	PDF /JS object 11 at offset 0xE66	487 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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