Malicious PDF — malware analysis report

Static analysis result for SHA-256 263af13b7f46e281…

MALICIOUS

PDF

185.4 KB Created: 2015-07-24 20:51:28 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: b897cb13e65b28876a96c58063810489 SHA-1: b296313a2a93b41929c2f9056dfb54992902fff5 SHA-256: 263af13b7f46e2811929dcb2c88b0cea65d51840797e1dca843d5bd24e8153c0
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 infrastructure. This suggests the document is designed to lure users to a malicious website. The presence of embedded URLs and the PDF_MALICIOUS_REDIRECTOR_LINK heuristic strongly indicate a phishing or malware delivery 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%BF%D1%80%D0%BE%D0%B3%D1%80%D0%B0%D0%BC%D0%BC%D0%B0+%D0%B4%D0%BB%D1%8F+%D1%81%D0%BC%D0%B5%D0%BD%D1%8B+ip+%D0%B0%D0%B4%D1%80%D0%B5%D1%81%D0%B0+%D0%BA%D0%BE%D0%BC%D0%BF%D1%8C%D1%8E%D1%82%D0%B5%D1%80%D0%B0&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4192/4192851_kak_pravilno_napisat_pismo_v_prokuraturu_obrazec.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4194/4194386_primeruy_receptov_po_farmakologii.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4192/4192748_skachat_iso_obraz_vindovs_7_cherez_torrent.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000243f1.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x243F1 3556 bytes
font_01_sfnt_off00025174.bin
ec04e1a2eda160d813fdff360b155507c0d6bb61463b7e2da723053bf902f6ff		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25174 13832 bytes
font_02_sfnt_off00027d33.bin
5716feb4bf80e8b1e06969f06fde46070f618118f18eda15b97d3130716302a0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27D33 14468 bytes
font_03_sfnt_off0002a7e3.bin
91ea12226fa114464a78a441446f3405ea1f0637a0715bed496d3e8851d38ef4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A7E3 6924 bytes
font_04_sfnt_off0002bbbf.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BBBF 6084 bytes
font_05_sfnt_off0002cb54.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CB54 3752 bytes

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