Malicious PDF — malware analysis report

Static analysis result for SHA-256 04539e07c7e0b329…

MALICIOUS

PDF

184.9 KB Created: 2015-08-05 13:32:57 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 37a894aceb8c5278dc1fef0d74438140 SHA-1: 3fbd4d56e099a6bbcaee96bce9f3859ea9f29664 SHA-256: 04539e07c7e0b329bd63aaabb3df3f685542b539f951b60302634084597cc0bd
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector infrastructure, indicating an attempt to lure the user to a harmful site. The ML classifier also strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the presence of embedded URLs and the heuristic firings strongly suggest a malicious intent to redirect the user.

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+%D0%B8%D0%B3%D1%80%D1%83+%D0%B3%D0%B5%D0%BD%D0%B5%D1%80%D0%B0%D1%82%D0%BE%D1%80+%D1%80%D0%B5%D0%BA%D1%81+%D0%BD%D0%B0+%D0%BA%D0%BE%D0%BC%D0%BF%D1%8C%D1%8E%D1%82%D0%B5%D1%80&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/6//4304/4304561_skachat_igru_zelenaya_ferma_na_telefon.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4304/4304440_skachat_zmeyku_na_android.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4304/4304476_titulnuyy_list_po_chercheniyu_a4.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_off000242a0.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x242A0 3556 bytes
font_01_sfnt_off00025023.bin
a2cd9d1030a28aa48ac6ecd6aead417fb241219c8ea0d98a6a38ad560103e65e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25023 13964 bytes
font_02_sfnt_off00027c25.bin
4ae165705ecc41720893a92c6e94e3ee89b3be36a12e4a920505046f59c61edc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27C25 14468 bytes
font_03_sfnt_off0002a6d3.bin
80dc626ac00238f799e1a1deb3bd476b36f0300bcdf97bcc0eabebf8ad559f20		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A6D3 6580 bytes
font_04_sfnt_off0002b9a3.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B9A3 6084 bytes
font_05_sfnt_off0002c938.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C938 3752 bytes

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