Malicious PDF — malware analysis report

Static analysis result for SHA-256 52281119a25a000a…

MALICIOUS

PDF

186.2 KB Created: 2015-07-25 12:31:00 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: c90aa5c1d01058cadf2a051962f56ca0 SHA-1: fa9cce88fb4fd322d91db728473cb08728189673 SHA-256: 52281119a25a000a2f3ce29485b53fc6357f9ac0aa99a920f99332504b5f49ff
150 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical alert for a malicious redirector link. The ML classifier also assigned a high probability of maliciousness. The embedded URL points to botcraftman.ru, which is identified as a known malicious redirector. This suggests the document's primary purpose is to redirect the user to a potentially harmful website.

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-8787038-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-8787038-0
  • 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=%D1%88%D0%B0%D0%BD%D1%82%D0%B0%D1%80%D0%B0%D0%BC+%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+epub&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184717_dogovor_kupliprodazhi_avtomototransporta.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4195/4195156_the_last_of_us_na_pc_skachat_torrent_rus.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4196/4196811_skachat_odnoklassniki_besplatno_na_kompyuter_dlya_windows_8.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000242f2.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x242F2 3556 bytes
font_01_sfnt_off00025075.bin
c3c120d5d5798c9620364af8db96c1acacc318daa0c2c755804ded45d58a7300		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25075 15460 bytes
font_02_sfnt_off00028035.bin
4482d28a1cba8689684a4d9815eac33252f79ebd02860f9f759cae08193d1dc7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x28035 14656 bytes
font_03_sfnt_off0002ab6c.bin
6f381823bfc24c7b0502babaf32745dfe4d09df5f7970e93803baca14d2904da		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AB6C 6880 bytes
font_04_sfnt_off0002bf2c.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BF2C 6084 bytes
font_05_sfnt_off0002cec1.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CEC1 3752 bytes

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