Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ef1db7675b44ca1…

MALICIOUS

PDF

186.4 KB Created: 2015-08-05 13:32:33 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 32ea44d5ec8280dcd66db24cf91629da SHA-1: e6d2a9cc1528215b95f2ac4cd263b67cef3f13d6 SHA-256: 7ef1db7675b44ca127a731b99189745a6afdd2ef5a8aa01b35c9bb76027d2d10
90 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and contains a direct link to a known malicious redirector infrastructure. The embedded URL, http://botcraftman.ru/, is likely used to funnel users to a malicious website for phishing or malware delivery. No scripts were extracted, but the presence of the malicious link is a strong indicator 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+%D0%BC%D1%83%D0%BB%D1%8C%D1%82%D1%84%D0%B8%D0%BB%D1%8C%D0%BC+%D0%B3%D1%83%D0%B1%D0%BA%D0%B0+%D0%B1%D0%BE%D0%B1+%D0%BD%D0%B0+%D1%82%D0%B5%D0%BB%D0%B5%D1%84%D0%BE%D0%BD&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/6//4304/4304566_skachat_kartuy_dlya_navitel_2013_cherez_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4304/4304493_vinamp_skachat_besplatno_dlya_vindovs_8_na_russkom.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4304/4304457_dopuski_posadki_tablica.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002476e.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2476E 3556 bytes
font_01_sfnt_off000254f1.bin
e682f8265ef509a3d4ee39c88e62a9fb83795ad04474f9d4d7e85b07b209d9bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x254F1 14392 bytes
font_02_sfnt_off00028212.bin
c33e6903d76079777c1b082a355654bfa5653b97afd40bc3e5344b34556d24bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x28212 14468 bytes
font_03_sfnt_off0002acc4.bin
5e298cc37ccedf1fb3e6a1bce4241feaf0c4794921d9cf89303409cf1112a617		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2ACC4 6636 bytes
font_04_sfnt_off0002bfdd.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BFDD 6084 bytes
font_05_sfnt_off0002cf72.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CF72 3752 bytes

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