Malicious PDF — malware analysis report

Static analysis result for SHA-256 67025b5a5046b5fb…

MALICIOUS

PDF

186.9 KB Created: 2015-08-08 15:19:18 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 865212b4098480ee08758cd8482025c4 SHA-1: b2ac4e6172a2a3b59374d7dc5b0f3becbf293b97 SHA-256: 67025b5a5046b5fb634c5d6d5ae010eac2b1f514a8f2cfb51431f069c4df0848
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector, indicating an attempt to lure the user to a harmful site. The ML classifier also flagged the PDF with high confidence. While no scripts were directly extracted, the presence of embedded URLs and the heuristic firings strongly suggest a malicious intent to redirect the user.

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%BF%D1%80%D0%B8%D1%87%D0%B8%D0%BD%D1%8B+%D0%BF%D0%B5%D1%80%D0%B2%D0%BE%D0%B9+%D0%BC%D0%B8%D1%80%D0%BE%D0%B2%D0%BE%D0%B9+%D0%B2%D0%BE%D0%B9%D0%BD%D1%8B+%D0%B2%D0%BE+%D0%B2%D1%81%D0%B5%D0%BE%D0%B1%D1%89%D0%B5%D0%B9+%D0%B8%D1%81%D1%82%D0%BE%D1%80%D0%B8%D0%B8&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/6//4391/4391971_d3dx9_36dll_skachat_besplatno.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4393/4393586_oemdrv86sys_chto_yeto_za_drayver.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4391/4391228_naruto_shippuden_gekitou_ninja_taisen_special_pc_skachat_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_off000247f1.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x247F1 3556 bytes
font_01_sfnt_off00025574.bin
c10c44a981cb73c388a95f15da8a0e13f15884bf12b32adc961259ff4f80520f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25574 15580 bytes
font_02_sfnt_off000284d9.bin
c33e6903d76079777c1b082a355654bfa5653b97afd40bc3e5344b34556d24bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x284D9 14468 bytes
font_03_sfnt_off0002af8b.bin
af391e1c2e80fde4043996cd595410613748719646fc675d85ae2f6ea69d0c16		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AF8B 6520 bytes
font_04_sfnt_off0002c1f0.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C1F0 6084 bytes
font_05_sfnt_off0002d185.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D185 3752 bytes

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