Pdf.Dropper.Agent-7217223-0 PDF malware analysis — malicious · bd3a2490b647496c

MALICIOUS

PDF

34.1 KB Created: 2010-01-26 21:04:21 +03:00 Authoring application: wordsHiddenWord (via 08b7dc6e8b36bcaac15847827b7951a9)

MD5: 74ed4b0a37aee08d044f38f102d5eea8 SHA-1: 3a8a6ce537c9f71a0701f5eb866cdda1dd0c7e13 SHA-256: bd3a2490b647496cef9ce21b17c6a36210437e9f7c1a756cf3279c7187536c0d

134 Risk Score

Malware Insights

Pdf.Dropper.Agent-7217223-0 · confidence 95%

MITRE ATT&CK

T1059.001 PowerShell T1566.001 Spearphishing Attachment T1204.002 Malicious File

The file is a PDF containing embedded JavaScript, which is a common technique for exploiting vulnerabilities and delivering malware. The presence of `eval()` calls and ASCII85Decode filters, along with ClamAV detection as 'Pdf.Dropper.Agent-7217223-0', strongly indicates a malicious dropper. The embedded JavaScript is likely responsible for downloading and executing a second-stage payload, although the exact mechanism is obfuscated.

Heuristics 7

ClamAV: Pdf.Dropper.Agent-7217223-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-7217223-0
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_obj0014_000.js` `b066c562e059cd559ca04b8a42cc9560095f68233642380f13dbe5003adf1db6`	pdf-javascript-stream	PDF /JS object 14 at offset 0x1B25	36719 bytes
`javascript_obj0016_001.js` `83a0526a24861fb9729a5e7f8b803ca38d21642b58e58a6600739cf7cb067437`	pdf-javascript-stream	PDF /JS object 16 at offset 0x7BBE	2083 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).

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