Malicious PDF — malware analysis report

Static analysis result for SHA-256 468a305ea83d4736…

MALICIOUS

PDF

341.8 KB Created: 2015-08-19 13:44:33 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 31053ab3db895117ff80f502195d883b SHA-1: e527183cc21b0326a2de222ec6b58ed61b5b444a SHA-256: 468a305ea83d4736fd7ad8798f392cd35aa85ea53f8aa1d87c7be27406ad862a
90 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, botcraftman.ru, which is a strong indicator of malicious intent. The ML classifier also flagged this PDF with high confidence. The document body is heavily obfuscated and does not provide clear textual clues, but the presence of the malicious URL is sufficient to infer a redirection attack pattern. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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=gameplayer+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%BD%D0%B0+%D0%B0%D0%BD%D0%B4%D1%80%D0%BE%D0%B8%D0%B4&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/6//4626/4626544_wwwx5clubru_perekrestok_aktivirovat_kartu.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4496/4496733_akt_priemaperedachi_tmc_blank_skachat.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4626/4626548_tuulgan_kungo_kuyrguyzcha_kuttuktoolor.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00050eec.bin
f6813647bd60b32b0ae58bf96cea89c7651a8213290be23aa483d350149e622d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x50EEC 8792 bytes
font_01_sfnt_off00052741.bin
149b5449af7da3b3a66032152ea0511870d55b425480a312837240e2fb5a78ca		 pdf-font-stream PDF embedded font (sfnt) at offset 0x52741 16212 bytes

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