Malicious PDF — malware analysis report

Static analysis result for SHA-256 d8a3efd75277299d…

MALICIOUS

PDF

186.4 KB Created: 2015-08-08 09:42:25 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: a86cd43e6c879702f78e70f9975f9037 SHA-1: 80070c68c5561accb8c99b8ed2dfe2635d670b0a SHA-256: d8a3efd75277299ded3f5f7f82e19ac8f26726efae378a02194339ad2c0f45e4
90 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics as malicious, specifically due to an embedded link to a known malicious redirector. The ML classifier also assigned a high probability of maliciousness. The presence of this link suggests the document's primary purpose is to redirect users to a potentially harmful site. No scripts were extracted, and the document body was truncated, limiting further analysis of the exact lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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=%D0%BB%D1%83%D1%87%D1%88%D0%B0%D1%8F+%D0%BF%D1%80%D0%BE%D0%B3%D1%80%D0%B0%D0%BC%D0%BC%D0%B0+%D0%B4%D0%BB%D1%8F+%D0%BF%D0%BE%D1%81%D1%82%D1%80%D0%BE%D0%B5%D0%BD%D0%B8%D1%8F+%D1%81%D0%B8%D0%BB%D0%BE%D0%B2%D0%BE%D0%B3%D0%BE+%D1%84%D1%83%D0%BD%D0%B4%D0%B0%D0%BC%D0%B5%D0%BD%D1%82%D0%B0&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/6//4383/4383979_tekst_pesni_zachem_pridumali_lyubov.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4383/4383885_pinakl_studiya_skachat.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4383/4383707_ustanovka_windows_7_na_kompyuter_s_windows_xp.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000245f4.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x245F4 3556 bytes
font_01_sfnt_off00025377.bin
5e06c5a871177616cdff85d42c35c51b25f48b948e3264b92f0f7f80583c91ea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25377 14508 bytes
font_02_sfnt_off000280fe.bin
9ea70f7910354975f8a4e7bd3970d41f07fae141645d00d83a7ee2a8f3807139		 pdf-font-stream PDF embedded font (sfnt) at offset 0x280FE 14520 bytes
font_03_sfnt_off0002abcd.bin
a8c1d477d2e3072c3c8bcb70b0bf5b15733716150abc5199cca897e524d83852		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2ABCD 6884 bytes
font_04_sfnt_off0002bfc2.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BFC2 6084 bytes
font_05_sfnt_off0002cf57.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CF57 3752 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.