Malicious PDF — malware analysis report

Static analysis result for SHA-256 23a1f6200a9e799b…

MALICIOUS

PDF

185.0 KB Created: 2015-08-08 11:40:38 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 0727b526322a757b8f48f7ea500e0a9f SHA-1: 791b0a4be8bbfb3e49f1a9d929fb0e4e0783a875 SHA-256: 23a1f6200a9e799b2d6fbd373affe1e8010905c56a5c0564091ac14ffd5e23ef
90 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and contains a link to a known malicious redirector. The presence of this link suggests the document is designed to lure users to a malicious website. No scripts were extracted from this sample, limiting further analysis of its behavior.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

Heuristics 2

  • 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.
  • 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=%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B0%D0%BB%D1%8C%D0%B1%D0%BE%D0%BC+%D1%87%D0%B5%D1%81%D1%82%D0%B5%D1%80+%D0%BD%D0%B5%D0%B1%D1%80%D0%BE+2015&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384802_skachat_pdf_knigi_medikam.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4387/4387414_skachat_plagin_optical_flares_dlya_after_effects.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384209_skachat_matlab_torrent.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00023fe3.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23FE3 3556 bytes
font_01_sfnt_off00024d66.bin
0e93b578ebb6c36ba5bfcfe8b1c1f44309df3666bc377b8717c7dbf50eef094e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24D66 14764 bytes
font_02_sfnt_off00027b51.bin
20022a3da58261568a1d07c35df999c175b04708c1971dcb570f4eed8bc8d7ed		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27B51 14640 bytes
font_03_sfnt_off0002a687.bin
606d31c633ec929427ec98f826d5ad04c140346f68aeab0fcb5b5162a5d9dd49		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A687 6832 bytes
font_04_sfnt_off0002ba56.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BA56 6084 bytes
font_05_sfnt_off0002c9eb.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C9EB 3752 bytes

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