Malicious PDF — malware analysis report

Static analysis result for SHA-256 182774342e9f9ca2…

MALICIOUS

PDF

188.0 KB Created: 2015-08-08 09:41:38 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 1a5d52d90e5127897b0b1784cdd8c708 SHA-1: b27cc002d18d69267624f4101a64040857492122 SHA-256: 182774342e9f9ca23dcc9c590007fbfa0f7c04021d6995ddd53894bf12df89a4
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector, botcraftman.ru, which is indicative of phishing or malware distribution. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the embedded URL is sufficient evidence of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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%A1%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+%D0%B8%D0%B3%D1%80%D1%83+%D0%A1%D1%82%D0%B0%D0%BB%D0%BA%D0%B5%D1%80+%D0%94%D1%80%D1%83%D0%B3%D0%B0%D1%8F+%D1%80%D0%B5%D0%B0%D0%BB%D1%8C%D0%BD%D0%BE%D1%81%D1%82%D1%8C+%D1%81+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82%D0%B0&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/6//4383/4383741_infamous_2_festival_of_blood_skachat_torrent_ps3.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384177_znaki_i_znakovuye_sistemuy_konspekt_uroka.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4383/4383779_chit_na_kopatel_onlayn_3d_na_odnoklassniki.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_off00024c40.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24C40 3556 bytes
font_01_sfnt_off000259c3.bin
2543060eccc55bd39ca7e66ac757fa7ae78647f3275604a9fcd207a0c4c1d945		 pdf-font-stream PDF embedded font (sfnt) at offset 0x259C3 14880 bytes
font_02_sfnt_off000287ed.bin
c33e6903d76079777c1b082a355654bfa5653b97afd40bc3e5344b34556d24bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x287ED 14468 bytes
font_03_sfnt_off0002b29f.bin
c60cca909c10e7e95a99bf42d43e6816a681277c14147c4cd81a8d7b9da80faa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B29F 6816 bytes
font_04_sfnt_off0002c64c.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C64C 6084 bytes
font_05_sfnt_off0002d5e1.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D5E1 3752 bytes

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