Malicious PDF — malware analysis report

Static analysis result for SHA-256 8db25cf39b80e097…

MALICIOUS

PDF

185.8 KB Created: 2015-08-08 11:43:02 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 05913a13edb15a3ad405524a5a2f842a SHA-1: 43b67816213096aff24de2a22000bd7c7b8d638b SHA-256: 8db25cf39b80e097aef7d2c3b940c6623ecc1f6ba0612742f50c8afa42f0bcd1
90 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, indicating a phishing or malware distribution attempt. The ML classifier also flagged this PDF with high confidence. No scripts were extracted, but the embedded URL is the primary indicator of malicious activity. The document's content appears to be obfuscated or corrupted, preventing a more detailed analysis of its 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%BB%D1%83%D1%88%D0%B0%D1%82%D1%8C+%D0%BF%D0%B5%D1%81%D0%BD%D1%8E+%D1%82%D1%83%D0%BA+%D1%82%D1%83%D0%BA+%D1%82%D1%83%D0%BA+%D1%8F+%D1%87%D0%B5%D0%BB%D0%BE%D0%B2%D0%B5%D0%BA+%D0%BF%D0%B0%D1%83%D0%BA+%D1%82%D0%B5%D0%BA%D1%81%D1%82+%D0%BF%D0%B5%D1%81%D0%BD%D0%B8&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384994_shanson_irina_krug_i_aleksey_bryancev_albom_slushat_onlayn.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4385/4385098_acronis_dlya_windows_8_skachat_besplatno.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4386/4386857_skachat_igruy_pro_korabli_cherez_torrent.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024393.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24393 3556 bytes
font_01_sfnt_off00025116.bin
5df0843ce90fa0fb8b93ea47ebce28d6dca76bb1ff6bd970528f403a6aca831c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25116 14632 bytes
font_02_sfnt_off00027f10.bin
3a79dd916ada34b8d5bbd5c68f840c184139786892dec66a5ab640a5dbb86ea9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27F10 14520 bytes
font_03_sfnt_off0002a9e0.bin
6c5192b8e84c0c7f3c878994b29afb12046260663deb501b2dfd3d83cd7841aa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A9E0 6732 bytes
font_04_sfnt_off0002bd33.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BD33 6084 bytes
font_05_sfnt_off0002ccc8.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CCC8 3752 bytes

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