Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e4e3a743515a591…

MALICIOUS

PDF

186.5 KB Created: 2015-07-24 11:30:00 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: ab5cca95cacbf5d809006524d1aba87d SHA-1: b933a66acbb62fcfec9a75e14ebc9ce59654f541 SHA-256: 4e4e3a743515a59123ab4d5f2d7a33430620f1453b80da57c7904a47223bbe4f
90 Risk Score

Malware Insights

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

The PDF file was flagged by a critical heuristic for linking to known malicious redirector infrastructure. The primary malicious URL identified is http://botcraftman.ru/, which is likely part of a phishing or malware distribution chain. No scripts were extracted, and the document body was truncated, limiting further analysis of the exact lure.

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=%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D1%87%D0%B8%D1%82+%D0%BD%D0%B0+contract+wars+%D0%BE%D0%BD%D0%BB%D0%B0%D0%B9%D0%BD+%D1%88%D1%83%D1%82%D0%B5%D1%80+%D0%BD%D0%B0+%D0%B4%D0%B5%D0%BD%D1%8C%D0%B3%D0%B8&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4186/4186952_aktivator_dlya_windows_7_maksimalnaya_torrent.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4191/4191230_yeroticheskie_smayliki_dlya_skaypa.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4191/4191379_sharlo_protiv_drakuluy_skachat_torrent.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002ab09.bin
dd1fe20dd02200f6429d4f6190cb0bb8d064cb3280c753912ac2a69ca82bb4cd		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2AB09 7280 bytes
font_00_sfnt_off0002448c.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2448C 3556 bytes
font_01_sfnt_off0002520f.bin
5e8393dd53f136ba80ccfdf2e432c2c778b54685e5ae2b2889a9aaa57e31cd50		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2520F 14584 bytes
font_02_sfnt_off00027f9e.bin
de726559ad83364a05991a44bb5e1ed2669ed06d0585b0e95148029b0876ede7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27F9E 14704 bytes
font_04_sfnt_off0002c05c.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C05C 6084 bytes
font_05_sfnt_off0002cff1.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CFF1 3752 bytes

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