Malicious PDF — malware analysis report

Static analysis result for SHA-256 8fc9d07e92836cf3…

MALICIOUS

PDF

188.8 KB Created: 2015-08-08 10:57:53 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: cb24107f4c7302929db99da217dde7f2 SHA-1: 9903b99b182cb42be6925342f78e10d16d7d6adb SHA-256: 8fc9d07e92836cf3cfc5be9fa4dceee86e9f5f138be4a301b56ae2826b1b8d15
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 ML classifier also strongly indicated maliciousness. The embedded URL points to botcraftman.ru, which is identified as a malicious redirector. This suggests the document's primary purpose is to lure the user to a malicious website.

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%B7%D0%B0%D1%80%D0%B5%D0%B3%D0%B8%D1%81%D1%82%D1%80%D0%B8%D1%80%D0%BE%D0%B2%D0%B0%D1%82%D1%8C%D1%81%D1%8F+%D0%B2+%D1%81%D0%BA%D0%B0%D0%B9%D0%BF%D0%B5+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE+%D0%BD%D0%B0+%D1%80%D1%83%D1%81%D1%81%D0%BA%D0%BE%D0%BC+%D1%8F%D0%B7%D1%8B%D0%BA%D0%B5&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384369_akt_priema_peredachi_obrazec.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4247/4247126_medicinskoe_pravo_uchebnik_2015.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384318_skachat_drayvera_na_hp_deskjet_f4180.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024cca.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24CCA 3556 bytes
font_01_sfnt_off00025a4d.bin
5d9f5b7e943bebf3f999dc488937ec454bdd547dfd0917f01bcabd073d238850		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25A4D 14904 bytes
font_02_sfnt_off000288bd.bin
f388d38563e792762eb460b207fc94ea1223f3d0a36115f2197d496a7b0dd15a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x288BD 14720 bytes
font_03_sfnt_off0002b428.bin
d9d0e4d978f1a454c14b1ff2d44415b458fb7c8ae4758b34c2348fd2f69d84a7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B428 7276 bytes
font_04_sfnt_off0002c94b.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C94B 6084 bytes
font_05_sfnt_off0002d8e0.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D8E0 3752 bytes

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