PDF malware analysis — malicious · 366c5895260a3b2e

MALICIOUS

PDF

34.4 KB Created: 2010-01-12 19:14:56 +03:00 Authoring application: manyTypeAre (via 93a27b0bd99bac3e68a440b48aa421ab)

MD5: 4c225056a034eae789ed1a408508eeb4 SHA-1: 1747fe6542447d0c4bc1c278d4b1f36dad7c7079 SHA-256: 366c5895260a3b2e50aa5bb0e0080f3511b6fd974d74b7ada6e94425d60bf39b

126 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF contains embedded JavaScript, which is obfuscated and uses an eval() call, indicating malicious intent. The ClamAV heuristic also flags it as obfuscated. The primary function of the embedded JavaScript appears to be downloading and executing a second-stage payload, as suggested by the heuristic 'Suspicious extracted artifact — Signals: Script obfuscation indicators; files: javascript_obj0018_001.js'. The specific URLs or final payloads were not directly extracted, leading to a lower confidence in family attribution.

Heuristics 6

ClamAV: Heuristics.PDF.ObfuscatedNameObject critical CLAMAV_DETECTION

ClamAV detected this file as malware: Heuristics.PDF.ObfuscatedNameObject
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.
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` `459167d9f42b5ae71e7155342a826438fb9613f78512b087fb6687ba6f09cb52`	pdf-javascript-stream	PDF /JS object 16 at offset 0x2011	38239 bytes
`javascript_obj0018_001.js` `556b1896abaf42047082f8c52636880f6637fe3b58771acd54110d57c0e41c63`	pdf-javascript-stream	PDF /JS object 18 at offset 0x7E29	1645 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).

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