Malicious PDF — malware analysis report

Static analysis result for SHA-256 55219dcc01abb2ad…

MALICIOUS

PDF

186.0 KB Created: 2015-07-23 20:50:36 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 0dc412254869a88301904a353cde50ef SHA-1: a6c1f73cf83421b02810e96d866ab60293753cb2 SHA-256: 55219dcc01abb2ad95fc6581a7ccb81aad8f1ffec08f942cc8848dade6433aa9
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a link to a known malicious redirector, botcraftman.ru. This is strongly indicative of a phishing or malware distribution attempt. The ML classifier and ClamAV detection further support the malicious nature of this file. No scripts were extracted, and the document body was truncated, limiting further analysis of the specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

Heuristics 3

  • 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.
  • ClamAV: Pdf.Dropper.Agent-7429856-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7429856-0
  • 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%B0%D0%BC%D0%B0%D0%B7%D0%BE%D0%BD%D0%BA%D0%B8+%D0%BF%D1%80%D0%B5%D0%B4%D0%BF%D0%BE%D1%87%D0%B8%D1%82%D0%B0%D1%8E%D1%82+%D0%B2%D0%B8%D0%BA%D0%B8%D0%BD%D0%B3%D0%BE%D0%B2+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184655_primeruy_oratorskoy_rechi.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184596_skachat_maynkraft_181_s_modami.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184699_windows_7_maksimalnaya_skachat_torrent_64_bit.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000243a5.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x243A5 3556 bytes
font_01_sfnt_off00025128.bin
29c9338a4be42a85ed5e664cbbd8c67578d7e68b7368035493055bbb90263914		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25128 14976 bytes
font_02_sfnt_off0002800d.bin
4ae165705ecc41720893a92c6e94e3ee89b3be36a12e4a920505046f59c61edc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2800D 14468 bytes
font_03_sfnt_off0002aabb.bin
77cd2c302f268599f250fae4e91d52e38a856056fc9e5903fb33a60b04c31f94		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AABB 6820 bytes
font_04_sfnt_off0002be52.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BE52 6084 bytes
font_05_sfnt_off0002cde7.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CDE7 3752 bytes

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