Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ac66f5e3b5f67e3…

MALICIOUS

PDF

186.0 KB Created: 2015-07-23 22:45:02 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 4f6eeda109bdbbb7e2f6054d2a66a66e SHA-1: 1ffa7ff339c35f7f50d650a0f12395fce4045741 SHA-256: 5ac66f5e3b5f67e323317a0bc8a0f268a2b8672703736712cacfb9e365cbdec1
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains an embedded link that redirects to a known malicious domain, 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 presence of a malicious redirector is sufficient evidence 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=%D1%81%D0%BF%D0%B8%D1%81%D1%8B%D0%B2%D0%B0%D0%BD%D0%B8%D0%B5+%D0%B4%D0%BB%D1%8F+2+%D0%BA%D0%BB%D0%B0%D1%81%D1%81%D0%B0+%D0%BF%D0%BE+%D1%80%D1%83%D1%81%D1%81%D0%BA%D0%BE%D0%BC%D1%83+%D1%8F%D0%B7%D1%8B%D0%BA%D1%83&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185433_skachat_vindovs_hr_zver_2015_besplatno_cherez_torrent_32_bit.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185325_zverdvd_2015_windows_7_skachat_torrent.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185520_skachat_film_zvon_mechey.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_off00024437.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24437 3556 bytes
font_01_sfnt_off000251ba.bin
b9beaf41217e4e0c3ade820e8d0711ee9cdfc6263a83d828b50dc9055b6f78a2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x251BA 14360 bytes
font_02_sfnt_off00027f1e.bin
083c247ab08f28272f4ed7a6b67a702c7475dd19613c25f0c2e29b0a96996489		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27F1E 14468 bytes
font_03_sfnt_off0002a9cf.bin
94fbf03a5d7c66ce0160d5149c22ad9b316525bb605e6851b4be1e05325c1975		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A9CF 6948 bytes
font_04_sfnt_off0002be02.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BE02 6084 bytes
font_05_sfnt_off0002cd97.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CD97 3752 bytes

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