Malicious PDF — malware analysis report

Static analysis result for SHA-256 98c9136438240949…

MALICIOUS

PDF

184.5 KB Created: 2015-07-24 12:37:59 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 9d579426dc631c1a97630cfadac3f2ae SHA-1: 19df852159b33d65b7113c6f63572da84ed9e817 SHA-256: 98c91364382409494d0962223f2b9d4578161bf49ac2d006ba553055b83ee97d
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link to a known malicious redirector, http://botcraftman.ru/, which is a strong indicator of malicious intent. The ML classifier also flagged this PDF with high confidence. No scripts were extracted, but the embedded URL is sufficient to classify this as a malicious redirector used for further payload delivery.

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=Epox+ep-8kda3i+manual+pdf+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184835_vladimir_zaharov_vse_albomuy_skachat_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184915_zhivuye_oboi_na_rabochiy_stol_dlya_windows_8_besplatno.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4192/4192375_kak_pisat_otchet_po_praktike.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00023b43.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23B43 3556 bytes
font_01_sfnt_off000248c6.bin
dc0a4d815ba74d2866f8f09cff79368b44b5ead77459ee85082a47ba11b7704c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x248C6 14876 bytes
font_02_sfnt_off00027713.bin
8909a8f12cb2c44176543f0ff992ed84dbd14007796b67bc03eefc89b946b2ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27713 14796 bytes
font_03_sfnt_off0002a2cd.bin
186c87203a79f5cd05af3aeb1847064b5835d7e325d84790ec4a68df25dba857		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A2CD 7276 bytes
font_04_sfnt_off0002b81d.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B81D 6084 bytes
font_05_sfnt_off0002c7b2.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C7B2 3752 bytes

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