Malicious PDF — malware analysis report

Static analysis result for SHA-256 31bf02fae57a6bfa…

MALICIOUS

PDF

186.3 KB Created: 2015-07-24 11:41:02 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: cf00fae2d63fc6ed1d1e00855f64f934 SHA-1: 10ea3c168a12875fdde1aff8fa8aedfaa129f3b3 SHA-256: 31bf02fae57a6bfac13a270c4749237f14052abd80b97bdd8a09154f2a48c6f5
90 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and contains a link to a known malicious redirector. This indicates the document is likely intended to lure users to a malicious site for further exploitation. No scripts were extracted, and the document body was truncated, limiting further analysis of the exact payload.

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=Disciples+3+%D0%BF%D0%B5%D1%80%D0%B5%D1%80%D0%BE%D0%B6%D0%B4%D0%B5%D0%BD%D0%B8%D0%B5+%D1%81%D0%B5%D1%80%D0%B8%D0%B9%D0%BD%D1%8B%D0%B9+%D0%BD%D0%BE%D0%BC%D0%B5%D1%80+%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//4185/4185476_chertezhi_vezdehodov_motocikl_ural.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4186/4186114_skachat_cleo_skript_na_dengi_dlya_samp.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185290_polnuye_versii_igr_skachat_besplatno_bez_ogranicheniy_po_vremeni.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002aadf.bin
7d8031ad82196d4c1febcbdb27df24039fb67404669450bf033dfbacecf4c2da		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2AADF 7060 bytes
font_00_sfnt_off0002448c.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2448C 3556 bytes
font_01_sfnt_off0002520f.bin
cf61167cc2181a49fd117f89e8d57a6cc9ad6752cce7528e1ed47ae893a88ff6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2520F 14760 bytes
font_02_sfnt_off00027fd1.bin
785f32c34ab5e7579e6ea484c3c0d90c26796e6ffd1eaf74e1a5ff07cab38133		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27FD1 14600 bytes
font_04_sfnt_off0002bf45.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BF45 6084 bytes
font_05_sfnt_off0002ceda.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CEDA 3752 bytes

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