Malicious PDF — malware analysis report

Static analysis result for SHA-256 26ae24a17ba4d8b2…

MALICIOUS

PDF

187.4 KB Created: 2015-07-24 13:34:12 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 2e22bd061c8da98f10f61f033540101a SHA-1: 33152619c771534d672d7019485f88af861fa124 SHA-256: 26ae24a17ba4d8b294b1261f830abb2cf3dbd1f6afdb0db56fc69d9a90275f9f
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. ClamAV also detected it as a dropper, suggesting it's designed to deliver additional malicious content. The primary IOC is the malicious URL found within the document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • ClamAV: Pdf.Dropper.Agent-8786088-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-8786088-0
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://botcraftman.ru/?lip&keyword=%D0%B2%D0%B8%D0%BC%D0%B0%D0%BD%D0%B8%D0%BA%D0%B0+%D1%88%D0%B0%D1%81%D1%82%D1%80%D0%B0+%D1%81+%D0%B8%D0%BB%D0%BB%D1%8E%D1%81%D1%82%D1%80%D0%B0%D1%86%D0%B8%D1%8F%D0%BC%D0%B8+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185577_kubanskiy_kazachiy_hor_skachat_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4192/4192011_yesse_po_obschestvoznaniyu_11_klass_primeruy.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4190/4190885_skachat_binarnuyy_fayl_su_na_android.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002491f.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2491F 3556 bytes
font_01_sfnt_off000256a2.bin
2fedca419e563a079651cf5895073fc9a179a08dfe28fead1f122eaa29ac74cd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x256A2 14708 bytes
font_02_sfnt_off000284a3.bin
821e46a2786ac867e97fb351b9485c6a035b95015511b0e87ee04d6ed285dae9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x284A3 14740 bytes
font_03_sfnt_off0002af8d.bin
def139b43bd74efd966fe61f4111af83e7d08afd201bdced7f20b4c6092084a9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AF8D 6988 bytes
font_04_sfnt_off0002c3af.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C3AF 6084 bytes
font_05_sfnt_off0002d344.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D344 3752 bytes

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