Malicious PDF — malware analysis report

Static analysis result for SHA-256 75f1962495958e89…

MALICIOUS

PDF

186.3 KB Created: 2015-08-08 10:47:35 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: b8d1ae7f725d44964732ffd150f935c8 SHA-1: 2e74708bc27b5f3c957000b20a1691468ca60867 SHA-256: 75f1962495958e89a20036dd2d577015409bd654c91dae4628232327972a9ed5
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains an embedded link to botcraftman.ru, which is flagged as a malicious redirector. The ML classifier also strongly indicated maliciousness. While no scripts were explicitly extracted, the presence of a malicious URL suggests an attempt to lure the user to a compromised 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=D3+devisol+drops+%D0%B2%D0%B8%D1%82%D0%B0%D0%BC%D0%B8%D0%BD+%D0%B43+%D0%B4%D0%B5%D0%B2%D0%B8%D1%81%D0%BE%D0%BB+%D0%B4%D1%80%D0%BE%D0%BF%D1%81+%D0%B8%D0%BD%D1%81%D1%82%D1%80%D1%83%D0%BA%D1%86%D0%B8%D1%8F&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/6//4386/4386286_iscelyayuschaya_muzuyka_skachat_besplatno.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4385/4385281_prakticheskaya_rabota_po_geografii_10_klass_otvetuy_kuznecov.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384103_skachat_igru_byetmen_torrent.pdf
    • http://www.microsoft.com/typography/fonts/You
    • http://www.microsoft.com/typography/fonts/

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002a8c1.bin
da17c0a5804fa120b794d1bc21e96a5ca3fd89956661ac915125c285ac70f82b		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A8C1 7608 bytes
font_00_sfnt_off000242d4.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x242D4 3556 bytes
font_01_sfnt_off00025057.bin
4298f117a55346e305592a5726449192d016ae4c87999f5545de830f9e65615d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25057 14284 bytes
font_02_sfnt_off00027d7c.bin
11b09bad1c2a9aac9fe56483e2ce5877a4341234b2f30172eed8fe705d435332		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27D7C 14652 bytes
font_04_sfnt_off0002bf35.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BF35 6084 bytes
font_05_sfnt_off0002ceca.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CECA 3752 bytes

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