Malicious PDF — malware analysis report

Static analysis result for SHA-256 701dae439eba3c77…

MALICIOUS

PDF

185.4 KB Created: 2015-08-05 22:03:26 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: bc2f128716aaff4416a72063e388d770 SHA-1: 2f7d02a8846d4649fd71e10b8c32b2acb7db2482 SHA-256: 701dae439eba3c7757c7ecb8eb20688a85fe52cf7bc92232af9582185c20d5e5
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by a machine learning classifier and contains a link to a known malicious redirector, http://botcraftman.ru/. This suggests the document is designed to lure users to a malicious site, likely for phishing or malware distribution. No scripts were extracted, but the presence of the malicious URL is a strong indicator of malicious intent.

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=cs+16+%D1%80%D1%83%D1%81%D1%81%D0%BA%D0%B0%D1%8F+%D0%B2%D0%B5%D1%80%D1%81%D0%B8%D1%8F+%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://img1.liveinternet.ru/images/attach/c/6//4305/4305976_skachat_whatsapp_messenger_dlya_iphone.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4306/4306397_arterialnoe_davlenie_tablica.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4304/4304904_kontrolnuye_rabotuy_po_nemeckomu_yazuyku_9_klass.pdf
    • http://www.microsoft.com/typography/fonts/You
    • http://www.microsoft.com/typography/fonts/

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002a740.bin
ac419f705e18a487b243fc94f30757e44cb1db24b557e312522a1dac81a380ab		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A740 7100 bytes
font_00_sfnt_off000241e2.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x241E2 3556 bytes
font_01_sfnt_off00024f65.bin
ecb129beec92c349331ef20666dbe98aff3b167617893f6379b549e1b875f0c9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24F65 14580 bytes
font_02_sfnt_off00027c78.bin
c9082ee908b1d5723b409137b8f9afbcc6f697413cb7be336b16f89f32d3dbb2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27C78 14680 bytes
font_04_sfnt_off0002bbf9.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BBF9 6084 bytes
font_05_sfnt_off0002cb8e.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CB8E 3752 bytes

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