Malicious PDF — malware analysis report

Static analysis result for SHA-256 19d60c16fc82fab0…

MALICIOUS

PDF

184.8 KB Created: 2015-08-08 10:45:51 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: e9e4db81e65e01468cd729ee66d2e9af SHA-1: 0b69cd45d3b993cea85e04176f51fe94409d7f69 SHA-256: 19d60c16fc82fab098c29d60dcc97589c52256ecd6b462502a36d3d333ef3eba
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link

The PDF file was flagged by a machine learning classifier and contains a link to a known malicious redirector. This indicates the document is designed to lure users to a malicious website. The presence of embedded URLs and the critical heuristic firing strongly support this conclusion.

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=%D0%9A%D0%BE%D1%80%D0%BE%D0%BB%D0%B5%D0%B2+%D0%B3%D0%BE%D0%BB%D0%BE%D0%B2%D0%B0+%D0%B3%D0%BE%D0%B3%D0%BE%D0%BB%D1%8F+%D1%87%D0%B8%D1%82%D0%B0%D1%82%D1%8C&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/6//4385/4385627_the_sims_2_18_in_1_skachat.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4383/4383990_konkursuy_po_geografii_dlya_shkolnikov_20152015.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384721_skachat_filmuy_o_ruybalke_cherez_torrent.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024159.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24159 3556 bytes
font_01_sfnt_off00024edc.bin
d8d4070aa3afa01e82c524737044f3bc5ebddd65702a72cbe7966a8c60a81cf4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24EDC 14660 bytes
font_02_sfnt_off00027c9f.bin
c33e6903d76079777c1b082a355654bfa5653b97afd40bc3e5344b34556d24bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27C9F 14468 bytes
font_03_sfnt_off0002a751.bin
ee428fcc6dcbf88f08b99c742722a9911792f5879693e764c90af1438e5afee2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A751 6388 bytes
font_04_sfnt_off0002b95a.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B95A 6084 bytes
font_05_sfnt_off0002c8ef.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C8EF 3752 bytes

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