PDF malware analysis — malicious · 530fdf303a5be956

MALICIOUS

PDF

8.4 KB

MD5: 7d62d1432b5e7d4fdf221f4a31774f2e SHA-1: fabbfa6a1027fb7178d2dd477103a867c49999de SHA-256: 530fdf303a5be956d287329c362e9681c1aaa5cd1658186641ebd5cb71190042

66 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF contains embedded JavaScript, indicated by PDF_JAVASCRIPT and PDF_JS heuristics. The presence of PDF_EVAL and PDF_FROMCHARCODE suggests obfuscated JavaScript code is being executed. This script likely downloads and executes a second-stage payload, as evidenced by the suspicious extracted artifacts. No specific family could be identified.

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. (matched inside decoded stream)
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. (matched inside decoded stream)
String.fromCharCode low PDF_FROMCHARCODE

String.fromCharCode found — used to construct payload strings dynamically. Common in benign JavaScript libraries for codepoint manipulation, so this alone is informational; weaponised use is also caught by the dedicated fromCharCode-stage and exploit-shape rules. (matched inside decoded stream)
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.
Embedded URL info EMBEDDED_URL

One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
URL http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://ns.adobe.com/xap/1.0/
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/pdf/1.3/

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_002_off0000032d.bin` `102020938c866a987f14e35da7754af70ff3447735a06a87af1e4ff7e860b327`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x32D	3248 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).
`stream_003_off00000b82.js` `edc9a69f5b04c7f32ca76cf209bf7f2ec1095babd3bca9adb01d0e2915ac86ea`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0xB82	286 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).
`objstm_0025_00.bin` `37a8b32c13f35b2b90a42376ebf9c9668b44a1d51da1acf6eeb35fc1e4f546bc`	pdf-objstm-decoded	PDF /ObjStm 25 0 obj (inflated)	432 bytes

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