Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1a2f3c5d155750d…

MALICIOUS

PDF

186.6 KB Created: 2015-07-24 07:35:17 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: cb1862563232d423ad0f1842893d1dd1 SHA-1: b7dcef68ed692b1bb0de15f9f7e2eea5f0cb87f9 SHA-256: d1a2f3c5d155750d8a3c64049e68c19a4401bbd2356777d1b1d0764c0f98af31
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link to a known malicious redirector infrastructure, indicating an attempt to lure the user to a harmful site. The ML classifier also strongly flagged this PDF as malicious. The embedded URL is the primary indicator of malicious intent, likely serving as a lure for phishing or further malware delivery.

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%BA%D0%B0%D0%BA+%D0%B2%D1%8B%D0%B9%D1%82%D0%B8+%D0%B8%D0%B7+%D0%BF%D0%B0%D1%81%D1%81%D0%B8%D0%B2%D0%BD%D0%BE%D0%B3%D0%BE+%D1%80%D0%B5%D0%B6%D0%B8%D0%BC%D0%B0+%D0%B2+gta+online&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185705_kak_chiterit_v_maynkraft_pe.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4189/4189256_tablica_pifagora_numerologiya_po_date_rozhdeniya.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4187/4187495_nn2.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002430a.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2430A 3556 bytes
font_01_sfnt_off0002508d.bin
23ed2961cbfc0fdf287ee7d2493fb52094142c98561afd072d291d6a47d067f7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2508D 14884 bytes
font_02_sfnt_off00027eb7.bin
3bf50d5f52b95857cf93df89efa676e912ccce5b38d535d95f98b4801e837732		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27EB7 14576 bytes
font_03_sfnt_off0002a9c8.bin
93eedc276bc1bf3b8eaf4c5841fdc07e6e2f2b77414e6ddcdaf4cdf3d03f1985		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A9C8 7796 bytes
font_04_sfnt_off0002c09b.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C09B 6084 bytes
font_05_sfnt_off0002d030.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D030 3752 bytes

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