Malicious PDF — malware analysis report

Static analysis result for SHA-256 c965f3a6d3108c42…

MALICIOUS

PDF

183.9 KB Created: 2015-07-24 08:55:06 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: fd144d0952031a0539450e54aa9a7c37 SHA-1: d4a67ea7a169fdee2254c8691d4b344531e17ead SHA-256: c965f3a6d3108c42be0bf1a88e2efe9e8f4ab30ee9b2912815ab375d03ae5324
90 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, botcraftman.ru, which is designed to lure users into downloading potentially harmful content. The ML classifier also strongly indicated maliciousness. No scripts were extracted, but the embedded URL is sufficient to indicate a phishing or malware delivery attempt.

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=windows+xp+sp3+usb+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4186/4186755_skachat_terraria_123_russkaya_versiya.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4188/4188052_skachat_avtokad_besplatno_na_russkom.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4189/4189082_gta_san_andreas_koduy_na_zimu.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002a0f3.bin
9782bbe9ba454da7ba7924262e63a9fc07d27f4e6907cdb6db1b9f5666347957		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A0F3 7156 bytes
font_00_sfnt_off00023b51.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23B51 3556 bytes
font_01_sfnt_off000248d4.bin
a12fb04bf29bf0686dbbfc3590592179bf6384f2b9ae64770579068b5c0d17fe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x248D4 14420 bytes
font_02_sfnt_off0002756f.bin
12bb1a0d68ea171802a0f3aaacdcfe28782e943fab13a445e4dd41910b33cda0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2756F 14736 bytes
font_04_sfnt_off0002b5b9.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B5B9 6084 bytes
font_05_sfnt_off0002c54e.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C54E 3752 bytes

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