Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb2ddb6544adbac2…

MALICIOUS

PDF

186.5 KB Created: 2015-07-24 12:03:48 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: b3fccf9010dcea3e8bf1eec11cd625dd SHA-1: 622e0404b836dbfca00e03d09f67a25cf44f3e3b SHA-256: cb2ddb6544adbac20742ca11074bce26da9d6ba45d0f9240760600b2a22055aa
90 Risk Score

Malware Insights

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

The PDF file 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. The primary malicious IOC is the redirector URL, which is likely used for phishing or malware distribution.

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%B2%D0%B8%D0%B4%D0%B5%D0%BE%D1%8D%D1%84%D1%84%D0%B5%D0%BA%D1%82%D1%8B+%D0%B4%D0%BB%D1%8F+%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE%D0%BC%D0%BE%D0%BD%D1%82%D0%B0%D0%B6%D0%B0+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4191/4191732_skachat_windows_7_nachalnaya_32_bit_cherez_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4190/4190981_yeroticheskie_kvestuy_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4192/4192154_shkola_7_gnomov_skachat_besplatno.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002450e.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2450E 3556 bytes
font_01_sfnt_off00025291.bin
2ef9ad93d9854e1778e6f718ef0f86e162c563aa3114d061a3953730c17ebf6b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25291 14340 bytes
font_02_sfnt_off00027fe5.bin
cb75d2d840e41bcb110c8511e866da8949c0225ff70816aee9c0bf133170196e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27FE5 14680 bytes
font_03_sfnt_off0002aaaf.bin
c69ffaacc9a3d0c38225129802b07d758b604b0f37b46a6282d6fcc1225c560e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AAAF 7428 bytes
font_04_sfnt_off0002c061.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C061 6084 bytes
font_05_sfnt_off0002cff6.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CFF6 3752 bytes

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