Malicious PDF — malware analysis report

Static analysis result for SHA-256 74d5d66b96331fc1…

MALICIOUS

PDF

186.1 KB Created: 2015-07-23 20:35:20 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 1f889fd10c34e153167c9620be35a30f SHA-1: c363d04e51af586aad4cd2460453be7373f6dc97 SHA-256: 74d5d66b96331fc150dbeab0a02085692a72e716a8b56563f32f1c265a359f29
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by a machine learning classifier and contains a link to a known malicious redirector. This suggests the document is designed to lure users to a malicious website, likely for phishing or malware distribution. No scripts were extracted, but the presence of a malicious URL is a strong indicator of malicious intent.

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=Toca+store+%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%BD%D0%B0+%D0%B0%D0%BD%D0%B4%D1%80%D0%BE%D0%B8%D0%B4&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184448_rezultatuy_egye_po_matematike_2015_rostovskaya_oblast.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184327_kupit_licenzionnuyy_maynkraft_za_10_rubley.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184358_zuppacraft_125_skachat_torrent.pdf
    • http://www.microsoft.com/typography/fonts/You
    • http://www.microsoft.com/typography/fonts/

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002a9a2.bin
c6379c9980eba4c7aa9861b46821744ec39792d48c9b9a9b59564d11427b310c
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A9A2 7240 bytes
font_00_sfnt_off00024291.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281
pdf-font-stream PDF embedded font (sfnt) at offset 0x24291 3556 bytes
font_01_sfnt_off00025014.bin
5ecdba08af7d353e9591dd4a359ccb4d4a4529a9d1152693042f45f603314067
pdf-font-stream PDF embedded font (sfnt) at offset 0x25014 15020 bytes
font_02_sfnt_off00027e94.bin
81b22fe093935a847464c2361e964a594270d7c420f677227e796a08a6a7eaee
pdf-font-stream PDF embedded font (sfnt) at offset 0x27E94 14576 bytes
font_04_sfnt_off0002beaf.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3
pdf-font-stream PDF embedded font (sfnt) at offset 0x2BEAF 6084 bytes
font_05_sfnt_off0002ce44.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e
pdf-font-stream PDF embedded font (sfnt) at offset 0x2CE44 3752 bytes