Malicious PDF — malware analysis report

Static analysis result for SHA-256 5de2f9fef2354544…

MALICIOUS

PDF

184.7 KB Created: 2015-07-24 09:12:28 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 053edfd44f2a4e0c805d406dc3f8f811 SHA-1: 33600003d614aac2bc6f65ab67c20eaa8a12bee4 SHA-256: 5de2f9fef2354544f4e71eb7b990e3719d0f91354dc8a883a0003c0d323e2b4e
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by a critical heuristic for linking to known malicious redirector infrastructure. The embedded URL, http://botcraftman.ru/..., is likely part of a phishing campaign or a distribution point for further malware. No scripts were extracted, but the presence of a malicious link strongly suggests a malicious intent to redirect the user to a harmful site.

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=Ethernet+%D0%BA%D0%BE%D0%BD%D1%82%D1%80%D0%BE%D0%BB%D0%BB%D0%B5%D1%80+%D0%B4%D1%80%D0%B0%D0%B9%D0%B2%D0%B5%D1%80+asus+x54h&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184443_novuye_biss_koduy_na_2015_god_sputnikovogo_televideniya.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184889_vinokur_monologi_skachat_mp3.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184550_programma_dlya_uskoreniya_igr_na_android.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_off0002a3d0.bin
13142d40a2bb9407e19d4e89a4f6ab193871a08ec3810772b6fab2f4d41c054b		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A3D0 7228 bytes
font_00_sfnt_off00023d5e.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23D5E 3556 bytes
font_01_sfnt_off00024ae1.bin
3eac14e159470da3e438829144993bf48ceb3acd74553ffb6c96260ed95153f9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24AE1 14552 bytes
font_02_sfnt_off000277da.bin
2b932734989e2046113475e62d94bfa47fac7afacb53f5ba91f53c23fe02e6b0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x277DA 14920 bytes
font_04_sfnt_off0002b8fb.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B8FB 6084 bytes
font_05_sfnt_off0002c890.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C890 3752 bytes

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