Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e3cf98a973183cb…

MALICIOUS

PDF

185.7 KB Created: 2015-07-24 20:32:22 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: eb7ec3ccad07f0aab7e1921f0da5fcb6 SHA-1: 387ad50ddaaf325e96b459c3edbbf567fa0655a8 SHA-256: 6e3cf98a973183cbcd4f758d50fb2db889a6203a46fe48b0d42080982804e978
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ClamAV and an ML classifier, and contains a link to a known malicious redirector. The embedded URL, http://botcraftman.ru/, is likely used to host a malicious payload or facilitate a phishing attack. No scripts were extracted, but the PDF structure and malicious link strongly suggest a downloader or redirector pattern.

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-7494237-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7494237-0
  • 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%B4%D1%80%D0%B0%D0%B9%D0%B2%D0%B5%D1%80+%D0%B4%D0%BB%D1%8F+%D0%BF%D1%80%D0%B8%D0%BD%D1%82%D0%B5%D1%80%D0%B0+hp+deskjet+3745+%D0%B4%D0%BB%D1%8F+windows+7&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4194/4194036_oboi_dlya_rabochego_stola_1920h1080_world_of_tanks_skachat.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4187/4187985_skachat_serial_strela_1_sezon_cherez_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184463_skachat_vk_na_android_kak_na_ayfone.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_off0002a530.bin
06ba7326e6ad4f16cd0f3674abae7b68aab88909f1ea657ddd47d457384bab11		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A530 8020 bytes
font_00_sfnt_off00023e0f.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23E0F 3556 bytes
font_01_sfnt_off00024b92.bin
daae65854f56364fb33504c6de6a7b0ef72fe935209f60fa3588c567eddf5a66		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24B92 14532 bytes
font_02_sfnt_off000278b9.bin
304bcae87ea660aa3f2401fe2bb8406362e259864bb89142d38bbc5ff3e63ad4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x278B9 15068 bytes
font_04_sfnt_off0002bce3.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BCE3 6084 bytes
font_05_sfnt_off0002cc78.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CC78 3752 bytes

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