Malicious PDF — malware analysis report

Static analysis result for SHA-256 a05a559c41b15699…

MALICIOUS

PDF

196.6 KB Created: 2015-08-05 14:57:43 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 19acce13a067dd830d2692b327f41731 SHA-1: 0a559b0bf7cd598380bc41428e41571e126848ea SHA-256: a05a559c41b156999b3c426f213d2586a2312d2c39f28afd2dd189d6016d7aa7
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 points to 'botcraftman.ru', which is identified as a malicious redirector. This suggests the document's primary purpose is to lure the user to a harmful external site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

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%B8%D0%B3%D1%80%D0%B0+%D0%BB%D0%BE%D0%B2%D0%B8+%D0%B2%D0%BE%D0%BB%D0%BD%D1%83+%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+%D0%BF%D0%BE%D0%BB%D0%BD%D1%83%D1%8E+%D0%B2%D0%B5%D1%80%D1%81%D0%B8%D1%8E&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/6//4304/4304545_lesnaya_bratva_skachat_igru.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4305/4305194_skachat_novinki_igruy_cherez_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4304/4304688_skachat_oboi_na_ayfon.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00027055.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27055 3556 bytes
font_01_sfnt_off00027dd8.bin
53135a4562d608f3b2aa6f3e83b268201254a7ce9b2348b890622898f5820074		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27DD8 14232 bytes
font_02_sfnt_off0002aa84.bin
6dc0a659ed118271ba2784b9576f1f4f6ba94dbb047d6fb609994a06420c7276		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AA84 14468 bytes
font_03_sfnt_off0002d536.bin
7e85d82ff8f4a86b0f51e084eafa07d36ac520c0f21f6768baf2467f5753fba8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D536 6760 bytes
font_04_sfnt_off0002e89e.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2E89E 6084 bytes
font_05_sfnt_off0002f833.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2F833 3752 bytes

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