Malicious PDF — malware analysis report

Static analysis result for SHA-256 d17d58a1c8467071…

MALICIOUS

PDF

74.0 KB Created: 2009-09-09 11:18:27 Authoring application: Scribus 1.3.3.13 (via Scribus PDF Library 1.3.3.13)
MD5: 4f754a8ac2db2577a4ac0324985cd997 SHA-1: 49ad841aa3a9b7b7cdc098f4181c6814e84f284e SHA-256: d17d58a1c8467071ed6fc8f5757fe1137438f90fd62e64e4b00229e77b0f4de1
86 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 JavaScript T1204.002 Malicious File

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings including 'PDF_JAVASCRIPT' and 'PDF_JS'. The 'CLAMAV_DETECTION' heuristic identifies the file as 'Pdf.Exploit.Agent-30202', suggesting it exploits a known vulnerability. The presence of ASCII85Decode filters also points towards exploit activity. The JavaScript streams are likely used to download and execute a secondary payload.

Heuristics 5

  • ClamAV: Pdf.Exploit.Agent-30202 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-30202
  • 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
  • PDF paints image(s) but contains no text operators info PDF_IMAGE_ONLY_LURE
    PDF has 2 image XObject(s) and the content stream contains no text-emitting operators (BT/ET, Tj, TJ, ', ") in either raw bytes or decompressed streams — this is the screenshot-as-PDF pattern used to bypass text-based scanners and to deliver instructions purely through rendered pixels. It is informational unless paired with invisible links or risky URI context.

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
javascript_obj0025_000.js
16a22f39a283ebe640dfb58cee6820f0a0287e3cad9abd741a68a150c32aa3ed		 pdf-javascript-stream PDF /JS object 25 at offset 0xE843 23972 bytes
javascript_obj0026_001.js
efc4c7cc5aa51f9cbd1b330750bc9359cb842cd4bb70f0b9efbc2cec94cbab97		 pdf-javascript-stream PDF /JS object 26 at offset 0x11F82 195 bytes
javascript_obj0027_002.js
d674de4e7d2aadad66945cdb096dfcfa022636668bccf78eff7f6df1bed9ef81		 pdf-javascript-stream PDF /JS object 27 at offset 0x12067 150 bytes
javascript_obj0028_003.js
d50b3592e23bedb32c825e17022396ebdeddd2a6090d39ce65a26125bfbc5dab		 pdf-javascript-stream PDF /JS object 28 at offset 0x12135 198 bytes
javascript_obj0029_004.js
b7324684085d88085e7b5443e3995d8105c541d83e2d26e9edfb113f8de9987c		 pdf-javascript-stream PDF /JS object 29 at offset 0x121FA 209 bytes

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