Malicious PDF — malware analysis report

Static analysis result for SHA-256 49cffd7bcb413c31…

MALICIOUS

PDF

185.3 KB Created: 2015-08-08 12:36:26 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: d17dfd44cac0f91ef9bbf6206f841939 SHA-1: 87326814d8e3cba1000557832c9470c8c5fb594a SHA-256: 49cffd7bcb413c314fe41ddaa92c918626022fb87891c5ddddf0984c82481ffc
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file was flagged by multiple heuristics, including a critical alert for a malicious redirector link pointing to 'http://botcraftman.ru/'. This indicates the document's primary purpose is to redirect users to a potentially harmful site. The ClamAV detection of 'Pdf.Dropper.Agent-7520695-0' further supports its malicious nature as a dropper.

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-7520695-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7520695-0
  • 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=%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%BC%D0%B0%D0%B9%D0%BD%D0%BA%D1%80%D0%B0%D1%84%D1%82+153+%D1%87%D0%B5%D1%80%D0%B5%D0%B7+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/6//4389/4389046_itil_v3_na_russkom.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4385/4385248_mohito_odezhda_oficialnuyy_sayt_na_russkom.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4386/4386135_skachat_besplatno_bez_registracii_i_sms_knigi_v_formate_fb2.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000240e1.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x240E1 3556 bytes
font_01_sfnt_off00024e64.bin
a21b182590e0fc16f3c509c02661e95ee28a1c4dde5429e7e1ebd8a1320d3c98		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24E64 14780 bytes
font_02_sfnt_off00027c9d.bin
25a510dc95bc6bea5a3317d69caad5e82e7df6904c5b8496985c3543bffecee7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27C9D 14640 bytes
font_03_sfnt_off0002a7cb.bin
2b52b3332b9aaa888049221c010e83e4f0800645d6b3f78b5e13f6a231c84a2e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A7CB 6808 bytes
font_04_sfnt_off0002bb86.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BB86 6084 bytes
font_05_sfnt_off0002cb1b.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CB1B 3752 bytes

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