Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f9dc4736c87c235…

MALICIOUS

PDF

186.3 KB Created: 2015-07-23 20:50:44 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: bf9c684d0002c49a10de50aaaa30d141 SHA-1: edc259eab6d2125f16ef17decb4409b2602df5e3 SHA-256: 4f9dc4736c87c2356a7b8afa55f957bd7e0cf9e93a56d5429fda106150237755
90 Risk Score

Malware Insights

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

The PDF file was flagged by a critical heuristic for linking to known malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness. The embedded URL points to botcraftman.ru, which is associated with malicious redirection. No scripts were extracted, but the presence of a malicious link is sufficient to indicate a likely 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=igo+primo+2015+%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%B4%D0%BB%D1%8F+%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//4184/4184420_soni_vegas_pro_11_skachat_besplatno_na_russkom.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184383_biletuy_na_pogruzchik.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184568_fayl_msvcp100dll_dlya_windows_7.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024206.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24206 3556 bytes
font_01_sfnt_off00024f89.bin
ff28d28def5892cb08bc837de6dc032292b235c4e77736a32460f3f97d1cd838		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24F89 14560 bytes
font_02_sfnt_off00027d26.bin
d416c8c98b573ec9b4c8bf5bdefcc918754d24179f5ace1dc88544bb6f845b19		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27D26 14808 bytes
font_03_sfnt_off0002a8d4.bin
87bc531c6b86028028324b31870d6dbf49660459c4b1272c2006207e3e9a9754		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A8D4 7660 bytes
font_04_sfnt_off0002bf64.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BF64 6084 bytes
font_05_sfnt_off0002cef9.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CEF9 3752 bytes

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