Malicious PDF — malware analysis report

Static analysis result for SHA-256 a3d85d4424fc9fc2…

MALICIOUS

PDF

184.6 KB Created: 2015-07-24 08:50:25 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: ded75d0a0759d24d0924449a9656212d SHA-1: fe3fc607fd2ae95c6b3eb9cdf109978d98308a06 SHA-256: a3d85d4424fc9fc2d6f7fd607c0229d1ae4b452fbae74868f58f8f98cb02b9fd
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 http://botcraftman.ru/... is the primary indicator of malicious intent, likely serving as a lure for phishing or malware delivery. No scripts were extracted from this sample.

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%BA%D0%BB%D1%8E%D1%87+%D0%B4%D0%BB%D1%8F+%D0%B8%D0%B3%D1%80%D1%8B+%D0%B4%D0%BD%D0%B5%D0%B2%D0%BD%D0%B8%D0%BA+%D0%BA%D1%83%D0%BF%D1%86%D0%B0&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4186/4186761_diplom_dlya_nevestuy_na_devichnik.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4188/4188631_blue_mountain_state_2_sezon_skachat_torrent.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4189/4189562_geroi_mecha_i_magii_3_wog_359_skachat_torrent_besplatno.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00023f4c.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23F4C 3556 bytes
font_01_sfnt_off00024ccf.bin
89660af41349620813d1cd2095a3b0cd6868627b0213f585e5c5ec267a8d66bf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24CCF 14856 bytes
font_02_sfnt_off00027a4f.bin
13c118e1b16d932ee74b7fb21ba03c9b98cbe48dfb6f44f054098b58aeb7df02		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27A4F 14468 bytes
font_03_sfnt_off0002a4ff.bin
45b7432168d21bb1964ea2151b4cc4a0965b52f8841b3aeae7d1fec66ff5874f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A4FF 6788 bytes
font_04_sfnt_off0002b876.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B876 6084 bytes
font_05_sfnt_off0002c80b.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C80B 3752 bytes

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