Malicious PDF — malware analysis report

Static analysis result for SHA-256 142d8d797d15838a…

MALICIOUS

PDF

185.7 KB Created: 2015-08-05 16:05:02 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 2746e223e60e3b4ef74dd7cc588b2da5 SHA-1: 27a92c948ac581d45d89bfb463af1c5c866169e5 SHA-256: 142d8d797d15838a32401ac92d15ec0d1b1fc966ae0381ea09c517d4b6674ff9
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains an embedded link to a known malicious redirector infrastructure, 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 the malicious URL is sufficient evidence 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=%D0%94%D1%80%D0%B5%D0%B2%D0%BD%D0%B8%D0%B9+%D1%82%D0%B0%D1%80%D0%BC%D0%B0%D1%88%D0%B5%D0%B2+%D0%B2%D0%BE%D0%B7%D1%80%D0%BE%D0%B6%D0%B4%D0%B5%D0%BD%D0%B8%D0%B5+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/6//4306/4306172_kod_oshibki_0x80070002.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4305/4305666_skachat_disk_dekabr_igromania_2006.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4304/4304612_skachat_7b_vse_pesni_besplatno.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_off00024293.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24293 3556 bytes
font_01_sfnt_off00025016.bin
cb14fabb38d1878fc9b2c1e4c0ed8492ad6a72e5237831875681a13c04398470		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25016 14988 bytes
font_02_sfnt_off00027e48.bin
08bdf8f40974cfa48d00b51dfc8c9b8c8797060ae31ea4694ed32cfc097f1255		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27E48 14520 bytes
font_03_sfnt_off0002a916.bin
b1cfd17599918badf158570cb29568c66561a33f41bd07de646bc0973821f885		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A916 6968 bytes
font_04_sfnt_off0002bd25.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BD25 6084 bytes
font_05_sfnt_off0002ccba.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CCBA 3752 bytes

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