Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d6758d3e7b04082…

MALICIOUS

PDF

185.5 KB Created: 2015-08-08 09:35:13 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 06fbba86ef5739c384b874380a366d07 SHA-1: 290055222bcf2cc03e8e51d0ec03c7a8d9ec1b24 SHA-256: 7d6758d3e7b04082fbe6cdd8455a0051b7b1e27f2c69e1141cbcdcbb408c20ad
90 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious Link

The PDF contains an embedded link to known malicious redirector infrastructure. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' confirms this, indicating the document is designed to lead users to harmful sites. The ML classifier also flagged the PDF with high confidence. The primary IOC is the malicious URL identified.

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%B0%D0%BA%D1%82%D0%B8%D0%B2%D0%B0%D1%82%D0%BE%D1%80+windows+7+7601+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/6//4383/4383871_pasportnuyy_stol_leninskogo_rayona_raspisanie.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4383/4383808_skachat_butanimaciyu_dlya_android.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384014_skachat_serial_sonka_zolotaya_ruchka_besplatno.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002a5fd.bin
552860e764644d7270163839bffc65f889a8a85c4fcc23ca17a5db7195d06851		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A5FD 7492 bytes
font_00_sfnt_off000240a3.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x240A3 3556 bytes
font_01_sfnt_off00024e26.bin
c7edb9f71069be0f27adb4639c6dbaff3bbb5fdc47cc4de9ecb7740994c75cd5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24E26 14120 bytes
font_02_sfnt_off00027adb.bin
5183b90d887016f8e47e5ff3fd35d2dc7a7383181c234cc52f2172bb420c6191		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27ADB 14584 bytes
font_04_sfnt_off0002bc09.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BC09 6084 bytes
font_05_sfnt_off0002cb9e.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CB9E 3752 bytes

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