Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0df88938a976fef…

MALICIOUS

PDF

185.9 KB Created: 2015-08-05 13:26:00 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 9d113c3fd4236fc243f502e7208a27b1 SHA-1: af7279d53899beee6c07f5056bbcabc58a37d3cb SHA-256: c0df88938a976fef933d4f4c495d8d324a5ad7f98ce8d58a763164b8fc689c52
90 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a link to a known malicious redirector, botcraftman.ru. This heuristic, combined with the ML classifier's high confidence, indicates the document is designed to lure users to a malicious site. The document body is heavily obfuscated and appears to be primarily structural data from wkhtmltopdf, offering no user-facing content to analyze. No scripts were extracted from this sample.

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%A1%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%BA%D0%BD%D0%B8%D0%B3%D0%B0+%D0%BF%D0%BE+%D1%80%D0%B5%D0%BC%D0%BE%D0%BD%D1%82%D1%83+%D1%83%D0%B0%D0%B7-390995&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/6//4304/4304439_shablon_lending_peydzh.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4304/4304514_igra_gta_5.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4304/4304491_dessar_mp3_skachat_besplatno_albom.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000242bb.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x242BB 3556 bytes
font_01_sfnt_off0002503e.bin
79b049a14947f9115ae3f6f7c0bec4b01869af9b85dde7b85223cfd6c81f5690		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2503E 14752 bytes
font_02_sfnt_off00027e38.bin
273e4a03e430231e8f1633530fac8f5e11a0ce5bcc04d2b84e385c90ec59bcd5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27E38 14640 bytes
font_03_sfnt_off0002a972.bin
b3b2b1d01f1177b42e80267b4423d8aa7c6c4d94f35d7b9c2d4bcaa5125fd3cc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A972 6948 bytes
font_04_sfnt_off0002bdb2.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BDB2 6084 bytes
font_05_sfnt_off0002cd47.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CD47 3752 bytes

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