Malicious PDF — malware analysis report

Static analysis result for SHA-256 18add70b1c5a471e…

MALICIOUS

PDF

182.5 KB Created: 2015-07-26 09:32:32 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 92e34f358d14a76e7fd913946e439b6d SHA-1: 7ee76d062f81ca2cfc1a94cecc0c81246f272958 SHA-256: 18add70b1c5a471e4e8a04a77c66ed2232e6de0269da5af50ee9f22f7da7a104
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The embedded URL `http://botcraftman.ru/?lip&keyword=0xc0000142+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C&charset=utf-8` is the primary indicator of malicious intent. While no scripts were explicitly extracted, the PDF structure and the malicious link suggest an attempt to lure the user to a compromised site, likely for further exploitation or credential harvesting.

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=0xc0000142+%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://img0.liveinternet.ru/images/attach/c/5//4184/4184908_upstream_intermediate_b2_students_book_skachat_besplatno.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4189/4189228_google_earth_dlya_android_skachat.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4215/4215655_resident_evil_6_skachat_torrent_pc_russkaya_ozvuchka.pdf
    • http://www.microsoft.com/typography/fonts/
    • http://www.microsoft.com/typography/fonts/You

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000238f5.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x238F5 3556 bytes
font_01_sfnt_off00024678.bin
6ea28edc1f707fb2d5ad91c3bb252b50c1d16df4a41d3425058acbc7feb57a56		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24678 14680 bytes
font_02_sfnt_off000273b7.bin
6caef2f16c4b79f14637a83f4dcafe06ed0479edebcba8eb8b4901d92eeae6f7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x273B7 14532 bytes
font_03_sfnt_off00029ea8.bin
4f68cfabd896e0748aefbd9213e341b1f70f87cdae5b73bf5f5b5e9fdac90d0d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x29EA8 6168 bytes
font_04_sfnt_off0002b006.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B006 6084 bytes
font_05_sfnt_off0002bf9b.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BF9B 3752 bytes

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