Malicious PDF — malware analysis report

Static analysis result for SHA-256 cbbef523795ceeaf…

MALICIOUS

PDF

184.9 KB Created: 2015-07-24 11:32:34 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: d5c804cc00f3a724f274e6241f5a4d46 SHA-1: 3aa56b1d41b7c460cf304e160aba821ee9251760 SHA-256: cbbef523795ceeaf29a5cfd0df648c9906c94611bc9bb24186250ccdbe0a0490
90 Risk Score

Malware Insights

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

The PDF was flagged by a critical heuristic for linking to known malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness. The embedded URL http://botcraftman.ru/... is confirmed as a malicious redirector. This suggests the document's primary purpose is to lure the user to a malicious 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%A3%D0%B3%D0%BB%D0%BE%D0%B2%D0%BE%D0%B9+%D0%B4%D0%B8%D0%B2%D0%B0%D0%BD+%D1%81%D0%B2%D0%BE%D0%B8%D0%BC%D0%B8+%D1%80%D1%83%D0%BA%D0%B0%D0%BC%D0%B8+%D1%87%D0%B5%D1%80%D1%82%D0%B5%D0%B6%D0%B8&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185557_tablica_grafik_rabotuy_na_mesyac.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4187/4187124_simcity_goroda_budoscheva_skachat_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184835_vladimir_zaharov_vse_albomuy_skachat_torrent.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024036.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24036 3556 bytes
font_01_sfnt_off00024db9.bin
128df092773145ec32ca813d1aa94e18bcd85e0a71fecf73ff648b75b1c7644d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24DB9 14596 bytes
font_02_sfnt_off00027b86.bin
c457fcfaab6f548331a7572fefd0d96ae260c7787e9dff2b51ae1aa36573dbb9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27B86 14468 bytes
font_03_sfnt_off0002a635.bin
160e3f27c04402e2e86dd481e1f7dc007c0fb64c3fd74d66eda55f4b5872499a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A635 6788 bytes
font_04_sfnt_off0002b9ba.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B9BA 6084 bytes
font_05_sfnt_off0002c94f.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C94F 3752 bytes

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