Malicious PDF — malware analysis report

Static analysis result for SHA-256 11307a5d15f4674b…

MALICIOUS

PDF

186.0 KB Created: 2015-07-24 11:44:33 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: ef080144f5d7dec004bb45dd1c72bb0c SHA-1: 63e58576d43828ee4025ff379cdb56773f1dac1d SHA-256: 11307a5d15f4674bde3111eead58f9e865e96f2cb1e7082f95ae37c2354b9546
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by multiple heuristics as malicious, specifically for containing a link to a known malicious redirector. The ML classifier also assigned a high probability of maliciousness. The embedded URL is likely part of a phishing or malware distribution scheme, aiming to lure users to a compromised 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=windows+7+ultimate+x32+%D0%BE%D1%80%D0%B8%D0%B3%D0%B8%D0%BD%D0%B0%D0%BB+%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&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4190/4190119_igruy_govoryaschiy_kot_tom_1_skachat_na_kompyuter.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184319_kryak_alavar_2015.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185468_vasha_versiya_windows_7_ne_yavlyaetsya_podlinnoy_chto_delat.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_off0002a74e.bin
f51f6c490f1ae4e7a164db4df51d65426d251e4f190db77b40d87cc9b0788fde		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A74E 7764 bytes
font_00_sfnt_off00023ff0.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23FF0 3556 bytes
font_01_sfnt_off00024d73.bin
e62aed1fe3eb422d7cc365fd8a984c53d51dabfd8c1cc7f38f5c2c4dcf94f373		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24D73 14812 bytes
font_02_sfnt_off00027b23.bin
7d52b242eaceddf0ebe1ccd38ef7938599b2a64a994fc209f82deaca62f552df		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27B23 14928 bytes
font_04_sfnt_off0002be54.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BE54 6084 bytes
font_05_sfnt_off0002cde9.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CDE9 3752 bytes

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