Malicious PDF — malware analysis report

Static analysis result for SHA-256 71cf8a74f093c070…

MALICIOUS

PDF

185.7 KB Created: 2015-08-08 09:47:03 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: c00f2642ed9b58dd963d1d4f35f27908 SHA-1: fffbc12798a301428304375a813a023e6dfe4f14 SHA-256: 71cf8a74f093c070ab1293e433556f86c2dee12df84e8e1024aab62677ef696f
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector, indicating an attempt to lure the user to a harmful site. The ML classifier also flagged this PDF with high confidence. No scripts were extracted, but the embedded URL is the primary indicator of malicious intent.

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=swat+4+gold+edition+%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&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/6//4383/4383948_skachat_kartu_kazahstana_dlya_navitel_besplatno_2013.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4383/4383906___omsi_2____5292.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4383/4383984_raspoznavatel_teksta_skachat_torrent.pdf
    • http://www.microsoft.com/typography/fonts/
    • http://www.microsoft.com/typography/fonts/You

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000240bf.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x240BF 3556 bytes
font_01_sfnt_off00024e42.bin
06d090717bd2c0b36e6b62d78b174748ee06e611691c75b371866b73675926cb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24E42 14660 bytes
font_02_sfnt_off00027b94.bin
1618e134455c4b38a8f682abb83ad1553a98837c9371e1a0c6565fa345478882		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27B94 14864 bytes
font_03_sfnt_off0002a790.bin
a2228699aa2540cc6262a473ca9483d9b5ddf4ace3a50da6cba0dc731271013c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A790 7304 bytes
font_04_sfnt_off0002bce8.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BCE8 6084 bytes
font_05_sfnt_off0002cc7d.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CC7D 3752 bytes

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