Malicious PDF — malware analysis report

Static analysis result for SHA-256 fba1162543789dd5…

MALICIOUS

PDF

186.4 KB Created: 2015-08-08 09:38:39 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 3166a3733a1ba15202e48bd1e354a37e SHA-1: 367b3cb5fbe5a0bbccac4039c890889d3148892a SHA-256: fba1162543789dd51462f1dcbb68108b6999d0fbf3d5a06428fc5effd5a9ca2d
150 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics as malicious, including a critical alert for a link to known malicious redirector infrastructure. The ML classifier also assigned a high probability of maliciousness. The primary malicious component identified is the embedded URL, which points to 'http://botcraftman.ru/'. This suggests the document's purpose is to lure users to a compromised or malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

Heuristics 3

  • 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.
  • ClamAV: Pdf.Dropper.Agent-7555736-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7555736-0
  • 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%B0%D0%BB%D0%B5%D0%BA%D1%81%D0%B0%D0%BD%D0%B4%D1%80+%D0%B4%D1%80%D0%B0%D0%B3%D1%83%D0%BD%D0%BA%D0%B8%D0%BD+%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://img0.liveinternet.ru/images/attach/c/6//4384/4384122_cameron_ca_575_dvd.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384051_karta_zhelaniy_onlayn_sozdat.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384075_skachat_dark_souls_2_cherez_torrent_na_pc_na_russkom.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002460f.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2460F 3556 bytes
font_01_sfnt_off00025392.bin
4703c5842ef2fb301ac1893bd0a29442d4421f37958fa9e91ed68feb669b292d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25392 15000 bytes
font_02_sfnt_off000281f1.bin
c33e6903d76079777c1b082a355654bfa5653b97afd40bc3e5344b34556d24bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x281F1 14468 bytes
font_03_sfnt_off0002aca3.bin
457e223532854d36b6afc23777cdb8da6e59d94e5b6ffc210bb658c5b31a478f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2ACA3 6648 bytes
font_04_sfnt_off0002bfb8.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BFB8 6084 bytes
font_05_sfnt_off0002cf4d.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CF4D 3752 bytes

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