Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff1451ec3694bd98…

MALICIOUS

PDF

185.3 KB Created: 2015-07-25 14:34:47 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: d871ec1fc20b202bf96cab276921c232 SHA-1: 23009413cdb80fc29db47ede0b24b63a956c1be4 SHA-256: ff1451ec3694bd98bcbf119cf68170ede7ac103ecab342f6a9a853cf9eda737d
150 Risk Score

Malware Insights

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

The PDF document was flagged by multiple heuristics, including a critical alert for a malicious redirector link and a high ML score. ClamAV also identified it as Pdf.Dropper.Agent-8790640-0. The embedded URL points to botcraftman.ru, a known malicious redirector. This suggests the PDF is designed to lure users to a malicious site, likely for phishing or malware delivery.

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-8790640-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-8790640-0
  • 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%BF%D1%80%D0%B8%D0%BB%D0%BE%D0%B6%D0%B5%D0%BD%D0%B8%D0%B5+%D0%B4%D1%80%D1%83%D0%B3+%D0%B2%D0%BE%D0%BA%D1%80%D1%83%D0%B3&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4203/4203990_koduy_pogasheniya_dlya_ps3_besplatno.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4188/4188686_mayn_kampf_na_russkom_skachat_besplatno.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4205/4205942_skolko_ballov_nuzhno_nabrat_v_egye_po_matematike_2015.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000244a3.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x244A3 3556 bytes
font_01_sfnt_off00025226.bin
1c3fcef6bafc0ae8b4d966d3f00420d2623bb3a78fd0e5224acef8f646596836		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25226 14308 bytes
font_02_sfnt_off00027f17.bin
b79d56b22a3d37edc4793e81e28af2d51416733c1decb699be69ae0b1e9dff38		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27F17 14468 bytes
font_03_sfnt_off0002a9c6.bin
74e280ed67e4fd7608e09bb565ce4314628ae2718d7107f3610775a04bb0e623		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A9C6 6288 bytes
font_04_sfnt_off0002bb78.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BB78 6084 bytes
font_05_sfnt_off0002cb0d.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CB0D 3752 bytes

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