Malicious PDF — malware analysis report

Static analysis result for SHA-256 83f2630cebe89ab3…

MALICIOUS

PDF

183.7 KB Created: 2015-07-24 12:12:20 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 04ee53e41c5ca25734eb3e3e98533cde SHA-1: a12728ee6d551b4fd22caf4d0793de65a9fd8197 SHA-256: 83f2630cebe89ab324442d340961a35acfaedb0a607d55f1fb74b4ac5965a23b
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains an embedded link that redirects to a known malicious domain, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The ML classifier also flagged the document with high confidence. While no scripts were explicitly extracted, the nature of the PDF and the embedded link suggests an attempt to lure the user to a malicious site, likely for further exploitation or credential harvesting.

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=vkopt+%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://img1.liveinternet.ru/images/attach/c/5//4185/4185403_skachat_igru_battlefield_2142_cherez_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4192/4192304_skachat_kryak_dlya_portal_2.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4189/4189324_bot_dlya_nebesa_unikalnaya_igra.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_off00023b32.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23B32 3556 bytes
font_01_sfnt_off000248b5.bin
b1320e6ebdf2541c537539cff06f2fe5aee5694469bb08e40e8022812d61e75a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x248B5 15232 bytes
font_02_sfnt_off000277f6.bin
8a3cafab1f45bbcc19dd608548ffbf46fd816d48a2e27ae1ab5d5b9ee04a9a9a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x277F6 14632 bytes
font_03_sfnt_off0002a335.bin
b53ebbd876a3d91d666d4ba36419309828b9fc35aa0ea8f50e59484277ccdb9f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A335 6268 bytes
font_04_sfnt_off0002b4d1.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B4D1 6084 bytes
font_05_sfnt_off0002c466.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C466 3752 bytes

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