Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f38f7bd98ba89a2…

MALICIOUS

PDF

188.5 KB Created: 2015-07-25 03:17:47 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: d75aabb990644d854f94f078bef0d620 SHA-1: 8e5426568bd1025d3feda69c2de2a0a9b55ec436 SHA-256: 3f38f7bd98ba89a2d47284f95380d2828d1fb35f432f7a8de6129ece1c06a4c0
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Phishing: Spearphishing Attachment T1204.001 Malicious Link

The PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, indicating malicious content. A critical heuristic identified an embedded link pointing to http://botcraftman.ru/, which is classified as a known malicious redirector. This suggests the document's primary purpose is to lure users to a potentially harmful external site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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-8786600-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-8786600-0
  • 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%93%D0%B0%D1%80%D1%80%D0%B8+%D0%BF%D0%BE%D1%82%D1%82%D0%B5%D1%80+%D0%B8+%D1%82%D0%B0%D0%B9%D0%BD%D0%B0%D1%8F+%D0%BA%D0%BE%D0%BC%D0%BD%D0%B0%D1%82%D0%B0+%D0%B8%D0%B3%D1%80%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+%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://img1.liveinternet.ru/images/attach/c/5//4193/4193999_generator_klyuchey_dlya_igr_alawar.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4195/4195618_audiokniga_upk_rf.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4194/4194992_nazvanie_stroitelnuyh_firm_primeruy.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024dc6.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281
pdf-font-stream PDF embedded font (sfnt) at offset 0x24DC6 3556 bytes
font_01_sfnt_off00025b49.bin
2ce4291614993da1c67aa3b6c9b05feae75121be937618bb8ef287198a4d30ba
pdf-font-stream PDF embedded font (sfnt) at offset 0x25B49 15112 bytes
font_02_sfnt_off00028a1e.bin
c33e6903d76079777c1b082a355654bfa5653b97afd40bc3e5344b34556d24bd
pdf-font-stream PDF embedded font (sfnt) at offset 0x28A1E 14468 bytes
font_03_sfnt_off0002b4d0.bin
94fa242c11a6b073149b79574574630f871387f851705c92d4d2c0fedaab058c
pdf-font-stream PDF embedded font (sfnt) at offset 0x2B4D0 6796 bytes
font_04_sfnt_off0002c84b.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3
pdf-font-stream PDF embedded font (sfnt) at offset 0x2C84B 6084 bytes
font_05_sfnt_off0002d7e0.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e
pdf-font-stream PDF embedded font (sfnt) at offset 0x2D7E0 3752 bytes