Malicious PDF — malware analysis report

Static analysis result for SHA-256 e87b9c64ae39a4ae…

MALICIOUS

PDF

186.6 KB Created: 2015-07-25 15:23:19 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 18afd7304dbaf4d699274838f0a37c9b SHA-1: d189dfdabbc414968e5a4c070d411edd5407d0e4 SHA-256: e87b9c64ae39a4ae26d4923914ad4cae59d1214563f38ad4aac91e0ea56bbe25
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 redirector URL is http://botcraftman.ru/?lip&keyword=%D0%A1%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%BF%D0%BE%D0%BC%D0%BE%D1%89%D0%BD%D0%B8%D0%BA+%D1%83%D0%BF%D1%80%D0%B0%D0%B2%D0%BB%D0%B5%D0%BD%D0%B8%D1%8F+%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D0%BC%D0%B8+ps+vita&charset=utf-8. This suggests the document is designed to lure users to a malicious website. No scripts were extracted from this sample.

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%A1%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%BF%D0%BE%D0%BC%D0%BE%D1%89%D0%BD%D0%B8%D0%BA+%D1%83%D0%BF%D1%80%D0%B0%D0%B2%D0%BB%D0%B5%D0%BD%D0%B8%D1%8F+%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D0%BC%D0%B8+ps+vita&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4189/4189967_dosrochnoe_egye_po_matematike_2015_26_aprelya_variantuy.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4204/4204713_sims_3_skachat_torrent_besplatno_dlya_windows_7.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4200/4200696_zaryadnopuskovoe_ustroystvo_zpu135_instrukciya.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002aa81.bin
1c117bee158d4d1575d0df4c5e64a3226a9f04131173cc1d012b097157980ee0		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2AA81 7500 bytes
font_00_sfnt_off0002440e.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2440E 3556 bytes
font_01_sfnt_off00025191.bin
f87411d55124a5204a4e1aa2c333b3b50f0599df81c90b6de8191cd85fde62d9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25191 14744 bytes
font_02_sfnt_off00027f3a.bin
8e2d90d8cfa9cd1ea5e70a33d93bf29d5890184fae5936adfb7db2a88c45caa2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27F3A 14628 bytes
font_04_sfnt_off0002c083.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C083 6084 bytes
font_05_sfnt_off0002d018.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D018 3752 bytes

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