PDF malware analysis — malicious · b6cc9a5e3689caa9

MALICIOUS

PDF

34.0 KB Created: 2010-01-31 16:14:43 +03:00 Authoring application: ipsumDont (via 6e82873a32b95af115de1c414a1849cb)

MD5: 7d81f7fa300b004b125ba4f73cd43024 SHA-1: 1d8a04836ef3e7c8684cdfe549ec180d5a6fd072 SHA-256: b6cc9a5e3689caa919f8bedc349fac62ba6b7a6a9c28843a374e56b71cd7217c

74 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF file contains embedded JavaScript, indicated by PDF_JAVASCRIPT and PDF_JS heuristics. A high-severity PDF_EVAL heuristic firing suggests that the JavaScript code is obfuscated and uses eval() to execute it. This pattern is commonly used by malware to download and execute further stages. The presence of two embedded JavaScript files, 'javascript_obj0016_000.js' and 'javascript_obj0018_001.js', further supports this. The document body is unreadable, but the script analysis points to a downloader or dropper functionality.

Heuristics 6

eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution (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.
ASCII85Decode filter (with exploit indicators) low PDF_FILTER_85

ASCII85 encoding filter present alongside exploit delivery indicators — uncommon outside of obfuscation
Optional Content Group with action trigger low PDF_OPTIONAL_CONTENT

Optional Content Group (layer) co-occurs with an action trigger — content can be selectively hidden from viewers or scanners while the action still fires on open
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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0016_000.js` `6592941e6c75c68e7b73886422916070c83b007f00081f68bfab1549b60bf683`	pdf-javascript-stream	PDF /JS object 16 at offset 0x2154	36076 bytes
`javascript_obj0018_001.js` `0501157a199abc6e20058ab3de2a8001c8af13c740e080ec27f82a8df967a453`	pdf-javascript-stream	PDF /JS object 18 at offset 0x7D0A	1495 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).

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