Malicious PDF — malware analysis report

Static analysis result for SHA-256 b3801b8a5dd3cd8b…

MALICIOUS

PDF

186.1 KB Created: 2015-07-27 08:34:11 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: a78ab0e48fdf3f4c602b2dce421bc9e5 SHA-1: e3d3a50082e6dd5bb35934a07f77f47e23e32173 SHA-256: b3801b8a5dd3cd8b87746778b8f0382b0b6b6ab16c98177cd9dc74326e2a0516
90 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and contains a link to a known malicious redirector infrastructure. The presence of this link suggests the document is designed to lure the user to a malicious website. No scripts were extracted, and the document body was not parsable.

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%9F%D1%80%D0%BE%D0%B2%D0%B5%D1%80%D0%BA%D0%B0+%D1%81%D0%BA%D0%BE%D1%80%D0%BE%D1%81%D1%82%D0%B8+%D0%BF%D0%BE%D0%B4%D0%BA%D0%BB%D1%8E%D1%87%D0%B5%D0%BD%D0%B8%D1%8F+%D0%BA+%D0%B8%D0%BD%D1%82%D0%B5%D1%80%D0%BD%D0%B5%D1%82%D1%83&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4196/4196842_zakruytaya_shkola_2_sezon_skachat_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4204/4204803_skachat_torrent_windows_7_home_basic_64bit_russkaya_versiya.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4200/4200222_dyevid_allen_kak_privesti_dela_v_poryadok_skachat_besplatno.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024498.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24498 3556 bytes
font_01_sfnt_off0002521b.bin
80912432d3ea925b2ce5451761af4d3dd00713ef3a0ef4efaa20f6ed1754c6c2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2521B 15036 bytes
font_02_sfnt_off00028088.bin
13c118e1b16d932ee74b7fb21ba03c9b98cbe48dfb6f44f054098b58aeb7df02		 pdf-font-stream PDF embedded font (sfnt) at offset 0x28088 14468 bytes
font_03_sfnt_off0002ab38.bin
0f76cd1c8557bc88b90bb7d9b6dc6ce21074f930130f95cbda7c71248b140a76		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AB38 6708 bytes
font_04_sfnt_off0002be7f.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BE7F 6084 bytes
font_05_sfnt_off0002ce14.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CE14 3752 bytes

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