Malicious PDF — malware analysis report

Static analysis result for SHA-256 bba8d3c7b79a3f63…

MALICIOUS

PDF

184.8 KB Created: 2015-07-26 05:51:36 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: cc6d4ec79d3141d3ebb954f2ff0cc591 SHA-1: 0cb9760c559de7373e69e2c89f7aba244b4b9cc0 SHA-256: bba8d3c7b79a3f6324bb1d840164cfddbd4fcb8f567cbd368365d1bf97ce7fc9
90 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector. The ML classifier also flagged this PDF with high confidence. The embedded URL is designed to lure users into downloading potentially malicious content by disguising it as a software download. No scripts were extracted from this sample.

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=msvcr71dll+%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+%D0%B4%D0%BB%D1%8F+windows+7&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4204/4204911_skachat_gta_dlya_psp_cherez_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4204/4204452_gaz_27527_rukovodstvo_po_remontu_skachat_besplatno.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4210/4210306_zver_dvd_2014_windows_xp_64_skachat_torrent.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002a392.bin
6653ec928a56036dc35b113b48c87e5197447f37f447fd0eb3671fdb734a5e6b		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A392 7452 bytes
font_00_sfnt_off00023d24.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23D24 3556 bytes
font_01_sfnt_off00024aa7.bin
c1b2e5d02b03b611d3978101adb70f898f17e8a48efcc8835fa9608428d85d72		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24AA7 14784 bytes
font_02_sfnt_off00027845.bin
3a86fec70f4925619fe74b285f2f895c26c79e6c5a51e84b478264b06990e028		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27845 14632 bytes
font_04_sfnt_off0002b988.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B988 6084 bytes
font_05_sfnt_off0002c91d.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C91D 3752 bytes

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