Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a5618b0a475b158…

MALICIOUS

PDF

184.5 KB Created: 2015-07-24 16:53:44 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: e911728fec9a56f9fa1761ed56afc73c SHA-1: b48009a64f91459ce579b0e1f4f478a765696537 SHA-256: 1a5618b0a475b158840a75711d8d9c825874a61ba4354025636cbfff8daac83a
92 Risk Score

Malware Insights

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

The PDF 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 associated with malicious redirects. No scripts were extracted, and the document body was not parsable text, so the attack pattern is inferred from the malicious link.

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=windows+81+64+bit+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4189/4189395_the_sims_3_gold_edition_21_v_1_skachat_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4192/4192420_tri_kita_skachat_albom_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184898_rim_total_var_2_skachat_torrent_russkuyu_versiyu.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002a2e6.bin
99e5061b1ef01b1863617ce28a27c320c2e6d3398c68e5594535981aaeab9663		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A2E6 7296 bytes
font_00_sfnt_off00023c91.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23C91 3556 bytes
font_01_sfnt_off00024a14.bin
48ee9e083cfd74520e32dc3abfe7be4544cb7543afada0c3d0c4d7b96aecdc63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24A14 14440 bytes
font_02_sfnt_off00027735.bin
4f30102293061e2fdd7ea5f73095baba2b362946f611410d8fd4090b7185c53b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27735 14780 bytes
font_04_sfnt_off0002b842.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B842 6084 bytes
font_05_sfnt_off0002c7d7.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C7D7 3752 bytes

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