Malicious PDF — malware analysis report

Static analysis result for SHA-256 0837d2265e8bb67f…

MALICIOUS

PDF

184.3 KB Created: 2015-08-05 13:49:41 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 72624c7fc4a59ba81131a41efbf8afef SHA-1: df16afcee6f2e22277bd8f9b3748f533c00063b2 SHA-256: 0837d2265e8bb67f6adb521f80c705c046712fd8004ef42f78e9a628afebb4c1
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF was flagged by a critical heuristic for linking to known malicious redirector infrastructure. The embedded URL, http://botcraftman.ru/, is a strong indicator of malicious intent, likely serving as a lure to a phishing or malware distribution site. No scripts were extracted, but the presence of a malicious URL in a PDF document suggests an attempt to trick the user into navigating to a harmful resource.

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=%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+turbo+boost+%D0%B4%D0%BB%D1%8F+intel+core+i5&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/6//4304/4304607_indikatoruy_trenda_skachat.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4304/4304494_programma_dlya_seosprint_skachat_besplatno.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4304/4304706_chistuyy_ponedelnik_skachat_epub.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_off0002a2e0.bin
16f9bff478f9cab30e874dd14d4198f0268f0b8a505791f03aa8f22d1e46f0e1		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A2E0 7044 bytes
font_00_sfnt_off00023be5.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23BE5 3556 bytes
font_01_sfnt_off00024968.bin
c6a8c59be3b20b34ca0c923aff3ae9d1dec00c33fac36d387da10574a04bfeb2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24968 14528 bytes
font_02_sfnt_off000276f0.bin
788f4d9d6bac1f4d833d8865edbbcd519a3bd86ef5224c425262b1852dce6b5e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x276F0 14884 bytes
font_04_sfnt_off0002b773.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B773 6084 bytes
font_05_sfnt_off0002c708.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C708 3752 bytes

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