Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a84ca493059f9f5…

MALICIOUS

PDF

187.6 KB Created: 2015-08-08 15:17:53 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: a03161f232614a7f553339094dee580d SHA-1: aa9525566f4b9bde31d3b27e3be5f6d040bd2460 SHA-256: 5a84ca493059f9f59631df784c1fd8cac23298d14a64413205e1a428dbe74f3f
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF was flagged by a machine learning classifier and contains a link to a known malicious redirector. The embedded URL, http://botcraftman.ru/, is likely used to direct users to a malicious website for phishing or malware distribution. No scripts were extracted, but the presence of a malicious link strongly suggests a phishing or credential harvesting 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=%D1%82%D0%B5%D0%BA%D1%81%D0%B0%D0%BC%D0%B5%D0%BD+%D1%83%D0%BA%D0%BE%D0%BB%D1%8B+%D0%B8%D0%BD%D1%81%D1%82%D1%80%D1%83%D0%BA%D1%86%D0%B8%D1%8F+%D0%BF%D0%BE+%D0%BF%D1%80%D0%B8%D0%BC%D0%B5%D0%BD%D0%B5%D0%BD%D0%B8%D1%8E+%D1%86%D0%B5%D0%BD%D0%B0+%D0%BE%D1%82%D0%B7%D1%8B%D0%B2%D1%8B&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/6//4385/4385540_maksim_vse_pesni_skachat_torrent.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4385/4385647_zvuk_kinoplenki_skachat.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4389/4389127_skachat_logotip_sberbank.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_off00024a82.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24A82 3556 bytes
font_01_sfnt_off00025805.bin
727688bfbd82a192bcc7b2511992213fbe94b80e3e77194fd234bb311795997c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25805 14652 bytes
font_02_sfnt_off000285d5.bin
2894a2e95f819f01c1e340b533698417996480c8c8e83cbe4142995621a3eef5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x285D5 14468 bytes
font_03_sfnt_off0002b085.bin
422f9c401907e671fee96b17ff0a10ec6f270d63ee93d0c7a35f63d2918d56bc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B085 6952 bytes
font_04_sfnt_off0002c4a4.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C4A4 6084 bytes
font_05_sfnt_off0002d439.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D439 3752 bytes

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