Malicious PDF — malware analysis report

Static analysis result for SHA-256 5881395ae8b1b253…

MALICIOUS

PDF

187.1 KB Created: 2015-08-08 11:49:14 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 33fc5b51a32be04b34fc21e610b65d98 SHA-1: 93922a896d47017af2223eedb29915096bfafd71 SHA-256: 5881395ae8b1b253e2d7132420ed7feb3a69c88dad28ef51e88c11ac90e1f3d0
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, http://botcraftman.ru/. This suggests the document is designed to redirect users to a harmful site. No scripts were extracted, and the document body was not human-readable, limiting further analysis of the specific lure.

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=%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B8%D0%B3%D1%80%D1%83+%D0%B1%D0%B5%D0%B7+%D0%BE%D0%B3%D1%80%D0%B0%D0%BD%D0%B8%D1%87%D0%B5%D0%BD%D0%B8%D1%8F+%D0%B2%D1%80%D0%B5%D0%BC%D0%B5%D0%BD%D0%B8+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/6//4387/4387600_rhinoceros_uroki_na_russkom.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4387/4387201_zheleznyakov_istoriya_s_azbukoy.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4388/4388144_skachat_besplatno_albom_katya_ogonek.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000246f6.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x246F6 3556 bytes
font_01_sfnt_off00025479.bin
84f5ac5c5dece33f34519bb08e7e52a4e0adf1e954a4dd4aa764e50866ae6a89		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25479 15044 bytes
font_02_sfnt_off00028372.bin
c33e6903d76079777c1b082a355654bfa5653b97afd40bc3e5344b34556d24bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x28372 14468 bytes
font_03_sfnt_off0002ae24.bin
4c110122290f029a33305b2f8b1ce98291b25f165ded031fcccffc4e510d754a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AE24 7088 bytes
font_04_sfnt_off0002c2cb.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C2CB 6084 bytes
font_05_sfnt_off0002d260.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D260 3752 bytes

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