Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ade0793f534db4a…

MALICIOUS

PDF

185.8 KB Created: 2015-07-23 20:43:08 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: d5fdf41fc705198f712da9f2d58fa565 SHA-1: 5347f8e10a25e91bb403a7891ede3a748399e62c SHA-256: 3ade0793f534db4a099e244db74d7db4969aa19e422a8c8536c4331790de74eb
92 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 assigned a high probability of maliciousness. The embedded URL, http://botcraftman.ru/..., is the primary indicator of malicious intent, likely serving as a lure to a phishing or malware download page. No scripts were extracted, limiting further analysis of the delivery mechanism.

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=epochta+mailer+%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+c+%D0%BA%D0%BB%D1%8E%D1%87%D0%BE%D0%BC&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184482_skachat_klyuch_dlya_windows_7_sborka_7601.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184485_skachat_besplatno_knigu_na_50_ottenkov_temnee_dlya_android.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184373_forma_m29_na_spisanie_materialov_obrazec.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000240ff.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x240FF 3556 bytes
font_01_sfnt_off00024e82.bin
177c367320bd6f8a7625d2ab8f70c00f0964558195cb4dc643ae043a71ec4d12		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24E82 14632 bytes
font_02_sfnt_off00027b9d.bin
9f56eb0c9a8c156065ac5634e1638fa9e300747596882dcf944ecde0b5875694		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27B9D 14844 bytes
font_03_sfnt_off0002a742.bin
efad5a1925a859e05a48952ff7c7421f5f749f36afee2758081d030fc0f536df		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A742 7556 bytes
font_04_sfnt_off0002bd74.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BD74 6084 bytes
font_05_sfnt_off0002cd09.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CD09 3752 bytes

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