PDF malware analysis — malicious · 34952c0e08035c88

MALICIOUS

PDF

1.8 KB

MD5: beeb52ab273c020010aab3712d3f640f SHA-1: e754e71d1419d109113bdfa21674cee6c91d3df3 SHA-256: 34952c0e08035c88ed076e0edd7678eff810050975cdf2235eeb1c5728ea4755

108 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF contains an embedded JavaScript stream that utilizes the unescape() function, indicating obfuscation. This script is likely responsible for downloading and executing a secondary payload, as evidenced by the embedded PDF file. The primary PDF also contains a remote GoTo action, which could be used to redirect the user. The embedded JavaScript and the embedded PDF file are the highest priority IOCs.

Heuristics 7

Embedded PDF child has suspicious static findings high PDF_EMBEDDED_CHILD_STATIC_TRIAGE

PDF contains an embedded PDF stream whose extracted child matches suspicious or malicious PDF heuristics. Wrapper PDFs are commonly used to hide the actual exploit or lure payload from scanners that do not recursively inspect attachments.
unescape() call high PDF_UNESCAPE

unescape() found — often used to decode shellcode in PDF JS exploits (matched inside decoded stream)
Embedded file low PDF_EMBEDDED

PDF embeds a file attachment — could carry an executable or another weaponised document as a nested payload
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)
Remote GoTo action info PDF_GOTO_REMOTE

PDF has GoToR/GoToE actions that reference sibling document files — typical of multi-part document bundles
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_obj0005_000.js` `0ebbd9e332546f82cac649a2ea02dcc689c44a58959d59d6f4b0cfc7f4538b14`	pdf-javascript-stream	PDF /JS object 5 at offset 0xEA	1935 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 6 eval/decoder/string-building token(s).
`file.pdf` `3040970fc5ca59366b6d0237cf1a25a2d0d4875b75550bf70d624841a50c38bb`	pdf-embedded-file	PDF EmbeddedFile object 5 at offset 0x1DB	2394 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 6 eval/decoder/string-building token(s).

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