Malicious PDF — malware analysis report

Static analysis result for SHA-256 8bda933f88be8850…

MALICIOUS

PDF

185.7 KB Created: 2015-07-23 19:25:35 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: a95f0acf7d15f2e396eb26fd76c831f9 SHA-1: c6e2a16369f65473a19a2a64b3126c8fc70bc196 SHA-256: 8bda933f88be8850a49718fac7c1b5081d3e9ac16054d2fa380bcfa0be558c69
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to botcraftman.ru. This indicates the document is designed to lure users to a malicious site, likely for malware distribution. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the presence of a malicious URL is sufficient evidence for this assessment.

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-7429899-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7429899-0
  • 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%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE+%D0%B2%D0%B7%D0%BB%D0%BE%D0%BC%D1%89%D0%B8%D0%BA+%D0%B8%D0%B3%D1%80+%D0%B0%D0%BB%D0%B0%D0%B2%D0%B0%D1%80&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4183/4183261_deesposobnost_fizicheskogo_lica_shema.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4183/4183191_ladinec_shema_vuyshivki.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4183/4183249_proekt_po_fizicheskoy_kulture.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024272.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24272 3556 bytes
font_01_sfnt_off00024ff5.bin
548f280ed0ce543925e0e9f76fc9a45c60cc227a8be95d33ce37401adf9e25c9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24FF5 14688 bytes
font_02_sfnt_off00027e3c.bin
c33e6903d76079777c1b082a355654bfa5653b97afd40bc3e5344b34556d24bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27E3C 14468 bytes
font_03_sfnt_off0002a8ee.bin
2afdc78b5455ccf719effb6896bec4d969fd6c2c5dd845bdf172d66d5e63b7b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A8EE 6964 bytes
font_04_sfnt_off0002bd08.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BD08 6084 bytes
font_05_sfnt_off0002cc9d.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CC9D 3752 bytes

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