Malicious PDF — malware analysis report

Static analysis result for SHA-256 125f5c65de809a50…

MALICIOUS

PDF

186.6 KB Created: 2015-07-23 20:47:28 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 27393b93d4fcd33903a7bf423638a168 SHA-1: 2760f32caf3275c87e2e85e3ce1a669e4246d612 SHA-256: 125f5c65de809a50b5197a44489c8da62e06b597391fab0c17a4e97bb0d81713
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector, indicating an attempt to lure the user to a harmful site. The ML classifier also strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the presence of embedded URLs and the heuristic firings strongly suggest a malicious intent, likely for phishing or malware delivery.

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=Windows+7+%D0%BC%D0%B0%D0%BA%D1%81%D0%B8%D0%BC%D0%B0%D0%BB%D1%8C%D0%BD%D0%B0%D1%8F+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82+64+bit&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184543_skachat_chit_na_rubinuy_v_boy_s_tenyu_v_odnoklassnikah_besplatno.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184627_fipi_otkruytuyy_bank_zadaniy_gia_9_klass_2015_god_po_geografii.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184383_biletuy_na_pogruzchik.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_off0002aa99.bin
0444d0438e9cbe9b809809a6c628c315bb986e5e924ca52cb85eb28600e256fa		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2AA99 7488 bytes
font_00_sfnt_off0002434f.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2434F 3556 bytes
font_01_sfnt_off000250d2.bin
5ddfb0fa9ddabf387398a85e3f7fc979555b351d5afebb75dcbd2ee0e73c9901		 pdf-font-stream PDF embedded font (sfnt) at offset 0x250D2 14528 bytes
font_02_sfnt_off00027eb2.bin
7e46c7189d0e966dd8a8848f85a0029cd22e0b53099e81537487d67307c5d504		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27EB2 14828 bytes
font_04_sfnt_off0002c0a6.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C0A6 6084 bytes
font_05_sfnt_off0002d03b.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D03B 3752 bytes

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