Malicious PDF — malware analysis report

Static analysis result for SHA-256 17331db0f7e35c41…

MALICIOUS

PDF

187.3 KB Created: 2015-07-23 21:23:29 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 7b9f47b6dc8aeb3eb2bfad1554ad4c73 SHA-1: 563667978cc178a9bd74e26f6c7d43ff27e935a8 SHA-256: 17331db0f7e35c41d3f45791484743b99dece4e474d7f0d80a29d218d05be580
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to known malicious redirector infrastructure, 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 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%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D1%84%D0%B8%D0%BA%D1%81%D0%B8%D0%BA%D0%B8+%D0%B2%D1%81%D0%B5+%D1%81%D0%B5%D1%80%D0%B8%D0%B8+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE+%D1%87%D0%B5%D1%80%D0%B5%D0%B7+%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/5//4183/4183257_urok_proekt_po_russkomu_yazuyku.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184594_katya_sambuka_film_glubokoe_otverstie_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184584_shema_kubik_rubika_3h3.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_off00024915.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24915 3556 bytes
font_01_sfnt_off00025698.bin
373de87610ede7e8de5e37839c911d596e3609fcdef36d6e5df913825c15b167		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25698 14600 bytes
font_02_sfnt_off00028487.bin
c33e6903d76079777c1b082a355654bfa5653b97afd40bc3e5344b34556d24bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x28487 14468 bytes
font_03_sfnt_off0002af39.bin
0f51d991de9ee2cf09b634dfd05fd70fdcf5c93dd99a6448a51b6fc53b30d02a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AF39 6924 bytes
font_04_sfnt_off0002c342.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C342 6084 bytes
font_05_sfnt_off0002d2d7.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D2D7 3752 bytes

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