Malicious PDF — malware analysis report

Static analysis result for SHA-256 27ec4974d4bd7b86…

MALICIOUS

PDF

186.0 KB Created: 2015-07-26 07:01:05 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: ce61bb19e57b75f43e5b476ee3698290 SHA-1: 8a5dbd8ed1ad8ab4b99b1df412df51baf8bfff4a SHA-256: 27ec4974d4bd7b86efec586b0800f7a778b4442369195752e68b7841def5c363
90 Risk Score

Malware Insights

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

The PDF was flagged by multiple heuristics as malicious, specifically for containing a link to a known malicious redirector. The ML classifier also strongly indicated maliciousness. The embedded URL points to 'botcraftman.ru', which is identified as a malicious redirector. This suggests the PDF's primary purpose is to lure the user to a harmful 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=%D0%B2%D0%BE%D1%80%D0%BE%D0%BD%D0%B8%D0%BD%D1%8B+%D0%BD%D0%BE%D0%B2%D1%8B%D0%B5+%D1%81%D0%B5%D1%80%D0%B8%D0%B8+2014+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82+14+%D1%81%D0%B5%D0%B7%D0%BE%D0%BD&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4210/4210432_menabeni_metodika_obucheniya_solnomu_peniyu_skachat_besplatno.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4197/4197228_skachat_gia_po_biologii_9_klass_2015_god_testuy_s_otvetami.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4209/4209112_vh_dlya_ks_v_34.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002455c.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2455C 3556 bytes
font_01_sfnt_off000252df.bin
340968fb52be831b9181093befd37d1209fb66c04144ed3fc02625c69b8c314f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x252DF 14240 bytes
font_02_sfnt_off00027f96.bin
31091670d0e2acd862d4153696f8c6faeacd4087c7a44d304f96762113b9f12d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27F96 14680 bytes
font_03_sfnt_off0002aa61.bin
4d71876933af502c478b17a3378e2c9afcf30f6cd94a2866a02f7ce4bd3c37c3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AA61 6912 bytes
font_04_sfnt_off0002be5b.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BE5B 6084 bytes
font_05_sfnt_off0002cdf0.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CDF0 3752 bytes

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