Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c80c8b19bb3f8e7…

MALICIOUS

PDF

186.0 KB Created: 2015-08-06 15:35:43 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 20700886f98450f164221c37b98a773f SHA-1: 6e52898d99d0ab3c5f03b96f8d3218c4665957ae SHA-256: 4c80c8b19bb3f8e70731d64040ccb3af73dbf6610797dd4435d5f4a19b6e6c23
92 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 direct link to a known malicious redirector. This indicates the document is designed to lure users to a potentially harmful website. The redirector URL is http://botcraftman.ru/?lip&keyword=the+survivor+rusty+forest+%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, which is likely part of a phishing or malware distribution chain.

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=the+survivor+rusty+forest+%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://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/6//4307/4307172_shablon_dogovora_besprocentnogo_zayma.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4306/4306422_skachat_multfilm_v_3d_cherez_torrent_besplatno.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4310/4310393_voennaya_prisyaga_ukrainuy_tekst.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002a9a6.bin
134ba3447946f17800244a2feea0360596067168b8399f20d9abd063b1887a6b		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A9A6 7036 bytes
font_00_sfnt_off000241d2.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x241D2 3556 bytes
font_01_sfnt_off00024f55.bin
43ea25969beda1099c17186b7f2558547cc435e3a2e80a2b82126cca25d64042		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24F55 14960 bytes
font_02_sfnt_off00027ded.bin
9a40f8c022a9e96a26e77e77de4abf66885f0a67e5c60504f295e0c810b09890		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27DED 14828 bytes
font_04_sfnt_off0002be27.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BE27 6084 bytes
font_05_sfnt_off0002cdbc.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CDBC 3752 bytes

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