Malicious PDF — malware analysis report

Static analysis result for SHA-256 87e7e0b62d58d4e0…

MALICIOUS

PDF

187.3 KB Created: 2015-08-08 10:54:31 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: ef87a618c1107b4c5b39f72c30be2741 SHA-1: 1b99678a55d001e6c5111338716d4a5bafdfddb8 SHA-256: 87e7e0b62d58d4e0921033af4a7528a09e05c8b1939ab6d81e301add192fafa2
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged by a machine learning classifier and contains a critical heuristic indicating a link to known malicious redirector infrastructure. The embedded URL points to 'botcraftman.ru', which is identified as a malicious redirector. This suggests the document's primary purpose is to lure users to a harmful external site.

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=%D0%BF%D0%BB%D1%8E%D1%81+%D0%BE%D0%B4%D0%B8%D0%BD+%D1%81%D1%82%D1%83%D0%BB+%D0%BC%D0%B0%D1%88%D0%B0+%D1%82%D1%80%D0%B0%D1%83%D0%B1+%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&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/6//4386/4386087_s3pe_package_editor_skachat.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4386/4386697_krasivuye_devushki_foto_bryunetki_s_chelkoy.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4386/4386699_skachat_css_v34_s_yandeks_narod.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024764.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24764 3556 bytes
font_01_sfnt_off000254e7.bin
aefdd966a432f9673f0ee1f21403a62e9979e79412f27fd0375d2399154eb7cd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x254E7 15400 bytes
font_02_sfnt_off000284a7.bin
a45d20f075d39a20c9ad40b527a8a463292ea7884bc51f39b6e73ebe7b519429		 pdf-font-stream PDF embedded font (sfnt) at offset 0x284A7 14520 bytes
font_03_sfnt_off0002af78.bin
2931f01277286bb1b9d31924b38e3ee03a1d95b229f81c6285ee11aeb4ebf86f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AF78 6864 bytes
font_04_sfnt_off0002c343.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C343 6084 bytes
font_05_sfnt_off0002d2d8.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D2D8 3752 bytes

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