Malicious PDF — malware analysis report

Static analysis result for SHA-256 6361266a5adf2c43…

MALICIOUS

PDF

187.3 KB Created: 2015-07-25 11:08:26 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: f7d54e0c9c569ef5254b19bf294f4f3e SHA-1: bd1613b447ec002835f4e2f3bdbbd4acd3503a8a SHA-256: 6361266a5adf2c433a18bf6518bba1c7fec39e1dbac80ab1f2059cc017560504
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector, indicating an attempt to lure the user to a harmful site. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the presence of a malicious URL is sufficient evidence of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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%B2%D0%B5%D1%81%D0%B5%D0%BB%D0%B0%D1%8F+%D0%BC%D1%83%D0%B7%D1%8B%D0%BA%D0%B0+%D0%B4%D0%BB%D1%8F+%D0%B4%D0%B5%D1%82%D1%81%D0%BA%D0%B8%D1%85+%D0%BA%D0%BE%D0%BD%D0%BA%D1%83%D1%80%D1%81%D0%BE%D0%B2+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184546_klyuchi_dlya_emsisoft_anti_malware.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4192/4192283_videoredaktoruy_skachat_besplatno.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184931_spravka_o_srednem_zarabotke_dlya_centra_zanyatosti_skachat.pdf
    • http://www.microsoft.com/typography/fonts/
    • http://www.microsoft.com/typography/fonts/You

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024761.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24761 3556 bytes
font_01_sfnt_off000254e4.bin
8fd2dbe8367453ae8084829b8afd6d4d873456e6a00118354a753892844e9c72		 pdf-font-stream PDF embedded font (sfnt) at offset 0x254E4 14796 bytes
font_02_sfnt_off000282bd.bin
81769bdf344cd78b5ce670288e279110d030a28b1db186cf94958aad01f2de83		 pdf-font-stream PDF embedded font (sfnt) at offset 0x282BD 14748 bytes
font_03_sfnt_off0002adc9.bin
7e9dc1e1f52e92bce6b894f8c233dd63db59664fc7b8a147800de4c542e408e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2ADC9 7336 bytes
font_04_sfnt_off0002c33a.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C33A 6084 bytes
font_05_sfnt_off0002d2cf.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D2CF 3752 bytes

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