Malicious PDF — malware analysis report

Static analysis result for SHA-256 23fb86d8f69d555f…

MALICIOUS

PDF

37.3 KB Created: 2009-09-15 20:20:11 Authoring application: Scribus 1.3.3.13 (via Scribus PDF Library 1.3.3.13)
MD5: 5e59c3d588a3db351247fef419bfde4c SHA-1: 885262f5f818eeb8133537d6d1209195f04c69b5 SHA-256: 23fb86d8f69d555f1f7b12a9f11ca9871de5f0cce792c458bcccd14244d767c4
78 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains multiple embedded JavaScript streams, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The ClamAV detection 'Pdf.Dropper.Agent-7239663-0' strongly suggests this is a dropper. The JavaScript is likely responsible for downloading and executing a second-stage payload, a common technique for malware distribution. The PDF_IMAGE_ONLY_LURE heuristic suggests the document may be visually deceptive, presenting an image to trick the user into interacting with the malicious content.

Heuristics 4

  • ClamAV: Pdf.Dropper.Agent-7239663-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7239663-0
  • 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.
  • 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_obj0017_000.js
d8f7519970ec2978294687e6001d9ffe8593241429e5687aa55a02b826049a5b		 pdf-javascript-stream PDF /JS object 17 at offset 0x4AE8 23924 bytes
javascript_obj0018_001.js
b6156771a6315aff8a77fc1e0ee30a4bb4d289538fc077270722842dc88d3042		 pdf-javascript-stream PDF /JS object 18 at offset 0x8D3E 114 bytes
javascript_obj0019_002.js
c8713b825aabc15f7e3f7b2f40ee4ec71f9ab4040eb11be7b9e309bf31d4a27f		 pdf-javascript-stream PDF /JS object 19 at offset 0x8DE9 337 bytes
javascript_obj0020_003.js
0fc4020e104efa2899fbcde8c5707e930f3854428ab7ad87443e7cb33aa09039		 pdf-javascript-stream PDF /JS object 20 at offset 0x8F24 192 bytes
javascript_obj0021_004.js
2e81823cdb8190e5d8d5d2845333270772bd4eea6b6e2de8527167514b03aa8d		 pdf-javascript-stream PDF /JS object 21 at offset 0x8FF1 202 bytes

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