Malicious PDF — malware analysis report

Static analysis result for SHA-256 55bb73de6d1d00f9…

MALICIOUS

PDF

183.7 KB Created: 2015-08-08 11:39:40 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: acee81d7c88ae0bc313511208ee38d06 SHA-1: 3abb955b41c3bd34764e110ea5a1860df52c23c1 SHA-256: 55bb73de6d1d00f9c71b69a768219d8de724a9f12be2faa0b648c8b0f281278f
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 link to a known malicious redirector. The embedded URL `http://botcraftman.ru/?lip&keyword=%D0%B3%D0%BE%D0%BB%D0%B8%D1%86%D1%8B%D0%BD%D1%81%D0%BA%D0%B8%D0%B9+%D1%83%D1%87%D0%B5%D0%B1%D0%BD%D0%B8%D0%BA+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C&charset=utf-8` is the primary indicator of malicious intent, likely leading to further compromise. No scripts were extracted, limiting the analysis of the exact payload.

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=%D0%B3%D0%BE%D0%BB%D0%B8%D1%86%D1%8B%D0%BD%D1%81%D0%BA%D0%B8%D0%B9+%D1%83%D1%87%D0%B5%D0%B1%D0%BD%D0%B8%D0%BA+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/6//4387/4387952_skachat_kryak_dlya_avast.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384032_shkola_milicii_v_krasnodare_chto_sdaetsya.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4387/4387097_vozvraschenie_rezidenta_skachat_torrent.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00023d28.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23D28 3556 bytes
font_01_sfnt_off00024aab.bin
62903198113a320d6dd69fc4060d216f11154dcaf157dc0ddf41582e81feb937		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24AAB 14080 bytes
font_02_sfnt_off00027741.bin
c33e6903d76079777c1b082a355654bfa5653b97afd40bc3e5344b34556d24bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27741 14468 bytes
font_03_sfnt_off0002a1f3.bin
8c0fa6863942a9dd06f5f47d3fe31bbdbaf63aaab443e3467409bcb9b6b74c25		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A1F3 6616 bytes
font_04_sfnt_off0002b4ce.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B4CE 6084 bytes
font_05_sfnt_off0002c463.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C463 3752 bytes

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