Malicious PDF — malware analysis report

Static analysis result for SHA-256 db895dd762e46d90…

MALICIOUS

PDF

183.4 KB Created: 2015-08-08 09:44:27 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: c40a894cf88811befd080d172714404d SHA-1: 0d286ecd973282a0a64c5cdbf98ccc89f19b4d4b SHA-256: db895dd762e46d90fffa1edac4d4dc82e332e4eea630f1884d2990b169b54c87
90 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to botcraftman.ru. This URL is likely used to serve malicious content or conduct phishing. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the primary attack vector is the embedded malicious link.

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=twidium+inviter+%D0%BA%D0%BB%D1%8E%D1%87&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384264_portfolio_fizinstruktora_v_detskom_sadu.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384205_bot_dlya_bratva_i_kolco.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4383/4383852_skachat_chit_na_kristalluy_v_tanki_onlayn_bez_virusov_besplatno.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00023aa2.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23AA2 3556 bytes
font_01_sfnt_off00024825.bin
49a49e610b5eb80255ed9e02fd023ab72d298c1b2ad6db8f4c3c20645758d253		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24825 14440 bytes
font_02_sfnt_off000275c2.bin
96b01508e085d50f73e5d64a9ca2fe3a3f16095d5630aeb30ad482f14c7c48ba		 pdf-font-stream PDF embedded font (sfnt) at offset 0x275C2 14868 bytes
font_03_sfnt_off0002a1b0.bin
c5426a91dc2d663435c0e6edf3fc74834f65b5b7f35c1321a147a98ceb81c4e9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A1B0 6400 bytes
font_04_sfnt_off0002b3cc.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B3CC 6084 bytes
font_05_sfnt_off0002c361.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C361 3752 bytes

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