Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c47b8e353a3c100…

MALICIOUS

PDF

184.4 KB Created: 2015-08-08 11:49:45 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 0965ca5312768ecb18ece47ba6406cfb SHA-1: 181be9e9dc83abf71ad6746c1da0ca155dc7f313 SHA-256: 0c47b8e353a3c100d6bc26c9c6f62a229871d60599b30f7c15cd44c8a0d954a3
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 malicious redirector link and a high ML score. The embedded URL 'http://botcraftman.ru/?lip&keyword=cheat+crystals+v40+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C&charset=utf-8' is confirmed to lead to malicious infrastructure. This suggests the document is designed to lure users into downloading further malware.

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-7629327-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7629327-0
  • 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=cheat+crystals+v40+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/6//4387/4387635_skachat_sobeyt_dlya_samp_03z_s_avtoustanovkoy.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4385/4385122_skachat_torrent_schenyachiy_patrul_vse_serii.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4387/4387927_knigi_dlya_ibooks_epub_skachat.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_off0002a3e9.bin
57091e4255dc45c9dca2ea24e992d9232e891b237cc4f192b8e0842dbe5144f5		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A3E9 6820 bytes
font_00_sfnt_off00023d6f.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23D6F 3556 bytes
font_01_sfnt_off00024af2.bin
d6713c47ded68b4d3b468ec37759edca512e89c2a7b85cb0e7e95d1f121006b6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24AF2 14756 bytes
font_02_sfnt_off0002786e.bin
ecee78515e668bd1c6543dd8c4cd19054c05c15ece615d79a61d169ab484ea17		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2786E 14944 bytes
font_04_sfnt_off0002b7b7.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B7B7 6084 bytes
font_05_sfnt_off0002c74c.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C74C 3752 bytes

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