Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e8619c0c5ecf372…

MALICIOUS

PDF

367.0 KB Created: 2015-08-19 14:16:10 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: fd5083cd2bf963702d0ea1ca19bb6f30 SHA-1: 813e1269ca97452464eb52b2fe600306e65158a1 SHA-256: 3e8619c0c5ecf372d9ef7cb529e7760ddaa2661433c28eb0471fb961b8812fbc
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, botcraftman.ru. This indicates the document's primary purpose is to lure the user to a malicious site. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the embedded URL is sufficient evidence of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9943

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%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D1%82%D0%B5%D0%BC%D1%8B+%D0%B4%D0%BB%D1%8F+windows+7+%D1%81+%D0%B0%D0%B2%D1%82%D0%BE%D0%BC%D0%B0%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%BE%D0%B9+%D1%83%D1%81%D1%82%D0%B0%D0%BD%D0%BE%D0%B2%D0%BA%D0%BE%D0%B9&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/6//4626/4626559_bonus_kod_na_iyun_2015_world_of_tanks.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4626/4626504_invayt_kod_dlya_world_of_tanks_na_avgust_2015_deystvuyuschie.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4626/4626441_uznat_rezultat_egye_po_russkomu_yazuyku_2015.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00057340.bin
c16c682d7a0de39c088314ca7ecd1c37c46323016e3171ea974c1f7c5547f77a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57340 9280 bytes
font_01_sfnt_off00058db3.bin
44daceae3a65f7da5e04f894bb63770e44abaf491bf25256d76f72af65f7dc93		 pdf-font-stream PDF embedded font (sfnt) at offset 0x58DB3 14856 bytes

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