Malicious PDF — malware analysis report

Static analysis result for SHA-256 28e5254f8b730626…

MALICIOUS

PDF

348.8 KB Created: 2015-08-24 04:48:50 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: dede9619b5a81364555ad585abfd93db SHA-1: fdf11ba94054cb05d20dd7c400a4fd1b3f2c30f4 SHA-256: 28e5254f8b730626fd7fa7780358d73662863dcdccb1c21791b01317ff246bba
90 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious Link

The PDF contains a link to a known malicious redirector, botcraftman.ru, which is disguised as a download for 'nokia ovi suite'. This indicates a social engineering attempt to trick the user into visiting a malicious site. The ML classifier also strongly flagged this PDF as malicious.

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=%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+nokia+ovi+suite+%D0%BD%D0%B0+%D1%80%D1%83%D1%81%D1%81%D0%BA%D0%BE%D0%BC&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/6//4700/4700439_smeshariki__idut__v_.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4694/4694202_angliyskiy__dlya__logistov_.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4696/4696229_uravnenie__s__odnim_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000531b5.bin
bd206cbdd442a7f02f47763f8c429d391ab1f8b135789974e79dcadc6f5ad003		 pdf-font-stream PDF embedded font (sfnt) at offset 0x531B5 8664 bytes
font_01_sfnt_off00054a41.bin
7f4bd980002ca78f8103d674d4fea9d14693a2217ac2c64ba57885ec86050f2e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x54A41 13412 bytes

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