Malicious PDF — malware analysis report

Static analysis result for SHA-256 61810480d6a9e09d…

MALICIOUS

PDF

186.1 KB Created: 2015-07-24 03:38:52 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 961605353e75a7e25757b52d9cd2f61f SHA-1: c515f5585861145b4fa9c050551173be5e820e15 SHA-256: 61810480d6a9e09db3682db62342d8e908b3aa5581eecd3349bc21a44966b96d
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link that advertises cracked software, a common lure for malicious documents. This link redirects to known malicious infrastructure, indicating an attempt to deliver a secondary payload or redirect to a phishing site. No scripts were extracted, but the presence of a malicious redirector URL is a strong indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

Heuristics 3

  • 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.
  • PDF link farm advertises cracked/pirated software medium PDF_CRACKED_SOFTWARE_LURE
    PDF contains many clickable links whose targets use cracked-software, keygen, serial-key, or warez vocabulary. These are SEO-spam lure documents that rank for software-piracy searches and route users to fake 'crack' download pages distributing potentially-unwanted programs, adware, or droppers. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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%B1%D0%BB%D0%BE%D0%BA%D0%B8%D1%80%D0%BE%D0%B2%D0%BA%D0%B0+%D0%BD%D0%B0+%D0%B0%D0%BD%D0%B4%D1%80%D0%BE%D0%B8%D0%B4+%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&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4187/4187560_skachat_igru_star_wars_jedi_knight_jedi_academy_cherez_torrent.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185854_vechnuyy_aktivator_windows_8_build_9200_korporativnaya_torrent.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185610_skachat_maks_korzh_vse_albomuy_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_off00024478.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24478 3556 bytes
font_01_sfnt_off000251fb.bin
1acacf929a1a91e471a511091ab17774f0306b62f5972898493ac1be7ec06886		 pdf-font-stream PDF embedded font (sfnt) at offset 0x251FB 15164 bytes
font_02_sfnt_off000280c0.bin
a9770cbb19a982a1ca245ae9dd57c2ebe78e8510dfe5e68aa43f25edc86204a3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x280C0 14468 bytes
font_03_sfnt_off0002ab72.bin
0b8e63fcfaf74201916074fab8cc17d904cb77d434ef8e0837547cdac96e9e58		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AB72 6712 bytes
font_04_sfnt_off0002bea6.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BEA6 6084 bytes
font_05_sfnt_off0002ce3b.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CE3B 3752 bytes

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