Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8789f478f265c1b…

MALICIOUS

PDF

187.3 KB Created: 2015-07-24 11:58:04 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: dd3153bbc535a569002949520af2cd24 SHA-1: 3c512667b7e6fbd9ee5358a88f57515d06e70f66 SHA-256: a8789f478f265c1b161716bd90ed59be1f856cc757ffa5e521f57aeeb865d3b0
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 and a high-confidence ML classification. The embedded URL points to botcraftman.ru, which is identified as a known malicious redirector. This suggests the document's primary purpose is to lure the user to a harmful external resource.

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-8788914-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-8788914-0
  • 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%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%BF%D1%80%D0%BE%D0%B3%D1%80%D0%B0%D0%BC%D0%BC%D1%83+%D0%B4%D0%BB%D1%8F+%D0%B2%D0%B7%D0%BB%D0%BE%D0%BC%D0%B0+%D0%B8%D0%B3%D1%80+%D0%BD%D0%B0+%D0%B0%D0%BD%D0%B4%D1%80%D0%BE%D0%B8%D0%B4+%D0%B1%D0%B5%D0%B7+root&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185660_wifibrutepro_exe.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4186/4186432_tna_impact_pc_skachat.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4186/4186219_spanch_bob_korona_neptuna_igra.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024577.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24577 3556 bytes
font_01_sfnt_off000252fa.bin
dfd5215a0145b6b74fff92fb6af0733fb3380666c37dec0d4003e651a91a5e10		 pdf-font-stream PDF embedded font (sfnt) at offset 0x252FA 15436 bytes
font_02_sfnt_off000282ad.bin
3a3ff6537071da6d467eaf54d531e0e4d26fc3444f24e79a32bbb0659052416d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x282AD 14576 bytes
font_03_sfnt_off0002adbf.bin
b3c4df7ed353bff977984aa31fad53946524c9ea9aca76a267035c749e9ed0b7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2ADBF 7324 bytes
font_04_sfnt_off0002c33f.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C33F 6084 bytes
font_05_sfnt_off0002d2d4.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D2D4 3752 bytes

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