Malicious PDF — malware analysis report

Static analysis result for SHA-256 732db530ab304be4…

MALICIOUS

PDF

185.3 KB Created: 2015-08-08 13:05:14 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 3604ac554cd661fd5f38d6434348c0cc SHA-1: 831ebe1d7aba6d2c172f5a71339950ecd4055bcb SHA-256: 732db530ab304be4993f67d78092e7d00066dec5f05318614b95026c186ab187
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF was flagged by multiple heuristics, including a critical alert for a link to known malicious redirector infrastructure. The ML classifier also assigned a high probability of maliciousness. The embedded URL points to botcraftman.ru, which is identified as a malicious redirector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

Heuristics 3

  • 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.
  • ClamAV: Pdf.Dropper.Agent-7629894-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7629894-0
  • 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%BA%D0%BE%D0%BD%D1%81%D0%BF%D0%B5%D0%BA%D1%82+%D1%83%D1%80%D0%BE%D0%BA%D0%B0+%D0%BF%D0%BE+%D1%84%D0%B8%D0%B7%D0%BA%D1%83%D0%BB%D1%8C%D1%82%D1%83%D1%80%D0%B5+4+%D0%BA%D0%BB%D0%B0%D1%81%D1%81&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/6//4387/4387166_skachat_igru_halo_4_cherez_torrent_na_pc_na_russkom.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4386/4386040_privetstvie_sportivnoy_komanduy.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4387/4387016_civilization_4_skachat_torrent_russkaya_versiya.pdf
    • http://www.microsoft.com/typography/fonts/
    • http://www.microsoft.com/typography/fonts/You

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000242d6.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x242D6 3556 bytes
font_01_sfnt_off00025059.bin
95e7211412b07b4d706ab30b3ce3cfbdaab5a13cd1dba7da7308a5ed7e031376		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25059 14472 bytes
font_02_sfnt_off00027d65.bin
0d6c49bcbef1f65ca5e96f92b5d88c62510c2b9160c1e25cb4b3e80a774467e2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27D65 14468 bytes
font_03_sfnt_off0002a818.bin
75a995ea55ed1cf645fafcb0b6af7ee006944cd02c6d4ddca0fe6fd648bf33e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A818 6744 bytes
font_04_sfnt_off0002bb75.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BB75 6084 bytes
font_05_sfnt_off0002cb0a.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CB0A 3752 bytes

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