Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ad536bb343fe019…

MALICIOUS

PDF

186.4 KB Created: 2015-07-23 21:17:59 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 4eda2eb77f94940d15170fab2b2fd222 SHA-1: 5c82a3a1f6bac3615a614a4d05bedb0efeea0ff3 SHA-256: 0ad536bb343fe019371b3844fc1f6de9e8593429db6967c393eef07742343d55
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document was flagged by a critical heuristic for linking to known malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness. The embedded URL is the primary indicator of malicious intent, likely serving as a lure to a phishing or malware distribution site.

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%81%D1%85%D0%B5%D0%BC%D1%8B+%D0%B2%D1%8B%D1%88%D0%B8%D0%B2%D0%BA%D0%B8+%D0%BA%D1%80%D0%B5%D1%81%D1%82%D0%BE%D0%BC+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184724_divinity_original_sin_skachat_torrent_russkaya_ozvuchka.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184588_ramka_dlya_specifikacii_a4.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184647_skachat_albom_alekseya_bryanceva_cherez_torrent.pdf
    • http://www.microsoft.com/typography/fonts/
    • http://www.microsoft.com/typography/fonts/You

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000245e4.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x245E4 3556 bytes
font_01_sfnt_off00025367.bin
e18189fce3d6326802e0f68b2121d3aa4b5d6780da638d0c893666ab83791c5b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25367 14664 bytes
font_02_sfnt_off0002809b.bin
6b4fe88cc06c6695e814bda583852903ca01c71ccd34a42f1030d6e16d0f4c10		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2809B 14588 bytes
font_03_sfnt_off0002abad.bin
7084d36defb0034e8cc88e86de2b0e59e0fded84e57d5a606e952faf5d7eb39d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2ABAD 6960 bytes
font_04_sfnt_off0002bfc8.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BFC8 6084 bytes
font_05_sfnt_off0002cf5d.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CF5D 3752 bytes

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