PDF malware analysis — malicious · 2dc307309cd94028

MALICIOUS

PDF

23.2 KB

MD5: 22297505c0682233370c61f79f1dcb66 SHA-1: 60c20898f8d9240e26ae8500eebee5c86a0922a0 SHA-256: 2dc307309cd94028e1045f8b14d9856c56a08f9ff5d9b4f6aaac3f3ac21fb08e

134 Risk Score

Malware Insights

MITRE ATT&CK

T1027 Obfuscated Files or Information T1566.001 Phishing: Spearphishing Attachment

The PDF contains embedded JavaScript that utilizes eval() and unescape() functions, indicating obfuscated code execution. The presence of ASCIIHexDecode and ASCII85Decode filters further suggests attempts to hide malicious content. The script is likely designed to download and execute a second-stage payload. Due to the obfuscation, the exact payload and delivery mechanism cannot be definitively determined.

Heuristics 8

eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution (matched inside decoded stream)
unescape() call high PDF_UNESCAPE

unescape() found — often used to decode shellcode in PDF JS exploits (matched inside decoded stream)
ASCIIHexDecode filter (with exploit indicators) medium PDF_FILTER_HEX

Hex-encoding filter present alongside exploit delivery indicators — often used to hide payload or shellcode bytes
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.
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)
ASCII85Decode filter (with exploit indicators) low PDF_FILTER_85

ASCII85 encoding filter present alongside exploit delivery indicators — uncommon outside of obfuscation
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_obj3332_000.js` `41b85b352566cdf5433d1a43e699608832fbd07da1d5ce3e5141aea5b1c53f26`	pdf-javascript-stream	PDF /JS object 3332 at offset 0x5A8F	252 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 4 eval/decoder/string-building token(s).

Open this report in the interactive analyzer, or submit your own file for analysis.