Malicious PDF — malware analysis report

Static analysis result for SHA-256 869fe0436feba2d1…

MALICIOUS

PDF

186.5 KB Created: 2015-08-08 13:08:28 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: af9224b226df4c0799d426a71216b859 SHA-1: d4941e9a770715718765071c084f03c35d43ef7b SHA-256: 869fe0436feba2d178b684b0de2db28406cd7fd62b9fa794c1d4cdc6d33260a5
90 Risk Score

Malware Insights

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

The PDF contains an embedded link to a known malicious redirector, http://botcraftman.ru/, which is a strong indicator of malicious intent. The ML classifier also flagged this PDF with high confidence. The document body is truncated and does not provide further context on the lure, but the presence of the malicious URL strongly suggests a phishing or malware distribution attempt.

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%BE%D0%BA%D1%81%D0%B8%D0%BC%D0%B8%D1%80%D0%BE%D0%BD+%D0%BF%D0%BE%D1%81%D0%BB%D0%B5%D0%B4%D0%BD%D0%B8%D0%B9+%D0%B7%D0%B2%D0%BE%D0%BD%D0%BE%D0%BA+%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/6//4392/4392084_german_tyuhtin_razminka_dlya_pozvonochnika_skachat.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4383/4383996_dota_2_skachat_torrent_besplatno.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384832_radio_rekord_torrent_2014.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024590.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24590 3556 bytes
font_01_sfnt_off00025313.bin
5c3d27e409f3ae12f3e7355f2bcff489b20db95047b01f82ec92bb354b422c66		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25313 15020 bytes
font_02_sfnt_off000281cb.bin
c33e6903d76079777c1b082a355654bfa5653b97afd40bc3e5344b34556d24bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x281CB 14468 bytes
font_03_sfnt_off0002ac7d.bin
188567b2cca638839c2f8e1fae4bc1404b1e5e9f2a2fec38532acd0948db8eb7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AC7D 6876 bytes
font_04_sfnt_off0002c055.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C055 6084 bytes
font_05_sfnt_off0002cfea.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CFEA 3752 bytes

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