Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d447f8ebf59f8f2…

MALICIOUS

PDF

182.7 KB Created: 2015-08-05 13:24:58 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: d723061cec8103a2499ac9dc98c16a80 SHA-1: 4f8b62f8c2c15530db079086c8f79f1d8d31572c SHA-256: 4d447f8ebf59f8f208e1a99bc1114a0afff693a45a01c6207a46dd6186463933
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 identified as a malicious redirector. No scripts were extracted, but the presence of the malicious link suggests the document's purpose is to lure the user to a harmful 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=%D0%B8%D0%B3%D1%80%D0%B0+%D0%B3%D1%82%D0%B0+5&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/6//4304/4304453_provoduy_na_pensiyu_muzhchinuy_scenariy.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4304/4304471_3d_home_architect_design_suite_deluxe_8_skachat_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4304/4304426_malavita_goblin_skachat_torrent.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00023a13.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23A13 3556 bytes
font_01_sfnt_off00024796.bin
f771cd085433453e6b6650d811edad43526bf397d9a5972603b7d0a31366cb04		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24796 15204 bytes
font_02_sfnt_off000276a7.bin
5d0869bbb262944525d3a1bfc61cc3a8fb93918f90c46ac4365b2e298fc58e32		 pdf-font-stream PDF embedded font (sfnt) at offset 0x276A7 14640 bytes
font_03_sfnt_off0002a1db.bin
8ec27b44dd17930ee69eedcceb725fce09678946b11f09744a97f6cc317ebe12		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A1DB 5572 bytes
font_04_sfnt_off0002b0f8.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B0F8 6084 bytes
font_05_sfnt_off0002c08d.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C08D 3752 bytes

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