Malicious PDF — malware analysis report

Static analysis result for SHA-256 771f5a633196f87e…

MALICIOUS

PDF

186.2 KB Created: 2015-07-25 09:37:45 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: dad917775215900ba64b2959573234af SHA-1: d11654d6326127b2a5232baefb3cd831b6b0b228 SHA-256: 771f5a633196f87e046b492693d37d805877a0035cfa69427989bc0d2dcf76e7
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. The embedded URL is likely intended to download a second-stage payload or lead to a phishing page.

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%BA%D0%BE%D1%80%D1%81%D0%B0%D1%80%D1%8B+%D1%81%D1%83%D0%BD%D0%B4%D1%83%D0%BA+%D0%BC%D0%B5%D1%80%D1%82%D0%B2%D0%B5%D1%86%D0%B0+%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://img0.liveinternet.ru/images/attach/c/5//4190/4190000_rut_prava_na_android_411_skachat_besplatno.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4186/4186164_shablon_tablichki_esli_vam_meshaet_moy_avtomobil_raspechatat.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4201/4201212_ppr_zemlyanuye_rabotuy_skachat.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_off00024577.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24577 3556 bytes
font_01_sfnt_off000252fa.bin
908d537a95086976ceea91b66aa32ec9e8591fcd6882d8e544cb752af33112fb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x252FA 14684 bytes
font_02_sfnt_off0002810d.bin
c33e6903d76079777c1b082a355654bfa5653b97afd40bc3e5344b34556d24bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2810D 14468 bytes
font_03_sfnt_off0002abbf.bin
773bf1ef49e5162f1eac24818794f4a338f2d4db0c1a7a62ee213a2fff5e0ced		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2ABBF 6700 bytes
font_04_sfnt_off0002bf07.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BF07 6084 bytes
font_05_sfnt_off0002ce9c.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CE9C 3752 bytes

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