Malicious PDF — malware analysis report

Static analysis result for SHA-256 0831c1608b306369…

MALICIOUS

PDF

186.5 KB Created: 2015-07-23 20:44:58 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: ef417a0cc512b27c78ad1a49f59a2fb9 SHA-1: c9a0bec04840536213c0d845898dfb67adfdf954 SHA-256: 0831c1608b306369f92b7ae5e41cddeacb9f209b7b55b23a0f2e7f1062e8160e
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. This indicates the document is likely part of a phishing or malware distribution campaign. The embedded URL is the primary 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=%D1%81%D0%B8%D0%BC%D1%81+3+%D0%B0%D0%BD%D1%82%D0%BE%D0%BB%D0%BE%D0%B3%D0%B8%D1%8F+18+%D0%B2+1+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184671_pin_koduy_na_varfeys_2015_may_rabochie.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4183/4183201_lada_kalina_shema.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184612_skachat_minecraft_1_5_2_exe.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_off000245ba.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x245BA 3556 bytes
font_01_sfnt_off0002533d.bin
bf348c0fe7eeabc68b99c6640fb8a62e50db985639ea36d8848686b8b4ce4f67		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2533D 14820 bytes
font_02_sfnt_off000280fa.bin
dbce04fdab181a86d34e555f4015194f224059d960d3183b839da8e892c9dc66		 pdf-font-stream PDF embedded font (sfnt) at offset 0x280FA 14468 bytes
font_03_sfnt_off0002aba7.bin
a43ac46e6fbd1c3a607474c572cae2b66f7aa9ba002f6ec69b9899ecbe8ac8ab		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2ABA7 7036 bytes
font_04_sfnt_off0002c027.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C027 6084 bytes
font_05_sfnt_off0002cfbc.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CFBC 3752 bytes

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