Malicious PDF — malware analysis report

Static analysis result for SHA-256 41085e01a3b38ce6…

MALICIOUS

PDF

185.3 KB Created: 2015-08-05 16:29:59 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 8090efb68b738d811a9ff23fce7e1060 SHA-1: f301b30b43958c0f18588a025391084776f4dd49 SHA-256: 41085e01a3b38ce68bf5152f5464abbd1fff8ebd56d98dbc1ab93f2e8faea386
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by a critical heuristic for containing a link to known malicious redirector infrastructure. The embedded URL, http://botcraftman.ru/, is likely part of a phishing or malware distribution scheme. No scripts were extracted, but the presence of a malicious URL strongly suggests an attempt to lure the user to a compromised site.

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%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+unity+player+%D1%87%D0%B5%D1%80%D0%B5%D0%B7+%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/6//4304/4304703_programmuy_dlya_proektirovaniya_kottedzhey.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4304/4304487_kazanorenburg_avtobus_raspisanie.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4304/4304870_yekzamenacionnuye_rabotuy_po_russkomu_yazuyku_9_klass.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_off0002412a.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2412A 3556 bytes
font_01_sfnt_off00024ead.bin
7a0943dbfafc0dcbe9181e454d64a0161384c3eaa3c712252bd432ed336587bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24EAD 14584 bytes
font_02_sfnt_off00027c08.bin
11dae4e65d99245bb249737af5a113dd6dae364925409ca8f87f4db29521c13d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27C08 14576 bytes
font_03_sfnt_off0002a716.bin
e2af9bfdca54c295f298b6208074011c2951f5f20487f1fe149d719222746f2b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A716 7036 bytes
font_04_sfnt_off0002bb90.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BB90 6084 bytes
font_05_sfnt_off0002cb25.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CB25 3752 bytes

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