PDF malware analysis — malicious · a08556b983bfff78

MALICIOUS

PDF

37.2 KB Created: 2010-04-19 21:56:35 +04:00 Authoring application: TCPDF (via TCPDF 4.8.032 (http://www.tcpdf.org))

MD5: 7349dc96972ea49c5ef0cb7885a735e1 SHA-1: 5767b98245db0096b92457b5185de6d4ebaa834b SHA-256: a08556b983bfff78d3dad0422bfab38e5c7fd14d60305aa323d053735ca9ebad

84 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings and the presence of a javascript_obj0010_000.js artifact. The ClamAV detection 'Pdf.Exploit.Agent-23557' strongly suggests this is a known exploit. The embedded JavaScript is likely responsible for downloading and executing a secondary payload, a common technique for PDF-based malware delivery. The document body text is nonsensical and does not provide further clues.

Heuristics 4

ClamAV: Pdf.Exploit.Agent-23557 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-23557
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

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0010_000.js` `9b4dd341a30626887d65c43a50735894e3463e5fd1bd66a7f9d01e7324810b40`	pdf-javascript-stream	PDF /JS object 10 at offset 0x8A59	1344 bytes

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