Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f7cea648431cfca…

MALICIOUS

PDF

184.4 KB Created: 2015-07-24 19:22:06 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 0ce02eecd909c0134030e2b152337ae0 SHA-1: 2ebf56e470f5df964391e960dc4b5223907977b0 SHA-256: 9f7cea648431cfca3eeefbc146bfceb72025ac5ef1ffc21804852d0cd26f878d
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by a critical heuristic for containing a link to known malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness. The embedded URL points to 'botcraftman.ru', which is associated with malicious activity, suggesting the document's purpose is to redirect users to a harmful site. No scripts were extracted, but the presence of a malicious link is sufficient evidence of a 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=%D0%B4%D0%BF+%D1%84%D0%BE%D1%82%D0%BE+%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/5//4193/4193819_1s_83_konfiguracii_skachat_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4186/4186425_skachat_standartnuye_igruy_na_windows_xp.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4187/4187080_skachat_narezki_na_telefon_besplatno_novinki_2014.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_off00024062.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24062 3556 bytes
font_01_sfnt_off00024de5.bin
9694c3d7d0a68fbeb9fe69a466f50099a577a89f9ed9a9e030ef374f9896d0df		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24DE5 14332 bytes
font_02_sfnt_off00027acb.bin
c33e6903d76079777c1b082a355654bfa5653b97afd40bc3e5344b34556d24bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27ACB 14468 bytes
font_03_sfnt_off0002a57d.bin
d4f823045dc34b92c50d979295e55ddf997567bdc6b9b28244def1e9cb9b837d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A57D 6508 bytes
font_04_sfnt_off0002b7fe.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B7FE 6084 bytes
font_05_sfnt_off0002c793.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C793 3752 bytes

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