Malicious PDF — malware analysis report

Static analysis result for SHA-256 ecbd554bc177b3e9…

MALICIOUS

PDF

187.9 KB Created: 2015-07-24 11:32:34 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 1e64f658a0f0c1917b7778627264c2bd SHA-1: b912169f3d14854a9320125dd0cb9cc52840d708 SHA-256: ecbd554bc177b3e9626180cb9bc120ed796142c41a4f4bb202390ec4ab35c51a
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 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 distribution site. 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 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=%D1%80%D0%B5%D0%B7%D1%83%D0%BB%D1%8C%D1%82%D0%B0%D1%82%D1%8B+%D0%B5%D0%B3%D1%8D+%D0%BF%D0%BE+%D0%BC%D0%B0%D1%82%D0%B5%D0%BC%D0%B0%D1%82%D0%B8%D0%BA%D0%B5+2015+%D0%BC%D1%83%D1%80%D0%BC%D0%B0%D0%BD%D1%81%D0%BA%D0%B0%D1%8F+%D0%BE%D0%B1%D0%BB%D0%B0%D1%81%D1%82%D1%8C&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185587_cisco_isb2230_instrukciya.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4190/4190110_skachat_muzuyku_besplatno_i_bez_registracii_diskoteka_80_90.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184440_kod_aktivacii_dlya_kaspersky_internet_security_2015_na_90_dney.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024859.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24859 3556 bytes
font_01_sfnt_off000255dc.bin
2b262fd5e14054ef8d266ac3a89afa33306123d5e8502474198d0d81f223ebfa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x255DC 15272 bytes
font_02_sfnt_off000284f1.bin
d129b2306b70ce91da7e21aa5dc95ff0e57120c5b3b157257a57119c7bcd55f4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x284F1 14640 bytes
font_03_sfnt_off0002b02a.bin
9dece7a3b1b2d5985e7e8d8ecf8b737dd78d8f1d0f4ec15d1a863b46656120fb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B02A 7412 bytes
font_04_sfnt_off0002c5fd.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C5FD 6084 bytes
font_05_sfnt_off0002d592.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D592 3752 bytes

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