Malicious PDF — malware analysis report

Static analysis result for SHA-256 6518453083afe333…

MALICIOUS

PDF

185.2 KB Created: 2015-07-23 19:39:09 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: ccacc0093e6c91ca82e5abad3b5bde0a SHA-1: 1f6c3176439c9b34324c1d680c237ddac91210d1 SHA-256: 6518453083afe333a03bde5dfd45ef528e73fcaeb2f16ce6a152ccc2cd610a58
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by a critical heuristic for linking to known malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness. The embedded URL is the primary indicator of malicious intent, likely serving as a lure to a phishing or malware distribution 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=%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B1%D0%BE%D1%82+%D0%B4%D0%BB%D1%8F+seosprint+2015&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4183/4183256_shema_podklyucheniya_gerkona.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184262_windows_8_dlya_noutbuka_skachat_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184295_skachat_mp_flooder.pdf
    • http://www.microsoft.com/typography/fonts/You
    • http://www.microsoft.com/typography/fonts/

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002a551.bin
6d05ef15e58643e70b1d1f1e1ba4f570a04682ec93f7b09202935e20d0fabd7a		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A551 7328 bytes
font_00_sfnt_off00023c72.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23C72 3556 bytes
font_01_sfnt_off000249f5.bin
12323cfc10f4b1a9d3a83330bed013c13ebcab2d245218bbd7a2d27cd8202902		 pdf-font-stream PDF embedded font (sfnt) at offset 0x249F5 15096 bytes
font_02_sfnt_off000279bf.bin
69e7f0b30c95350827e6b00178adae341f4b2fbebf20b9541405dc4871e856b1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x279BF 14756 bytes
font_04_sfnt_off0002bad3.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BAD3 6084 bytes
font_05_sfnt_off0002ca68.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CA68 3752 bytes

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