Malicious PDF — malware analysis report

Static analysis result for SHA-256 7275b94a565fe81a…

MALICIOUS

PDF

187.0 KB Created: 2015-07-24 19:12:54 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 8d1b73d1d0e950c686ba498cd66a6ced SHA-1: 9cd0b6e4a0a4a3a80e05a27070ea6aeabefe3632 SHA-256: 7275b94a565fe81a487db94f5f1846ebc30531733224bb6836c8749d784af6f3
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample is a PDF document containing an embedded URL that is flagged as a malicious redirector. The ML classifier also strongly indicated maliciousness. The primary attack vector appears to be directing the user to the malicious domain http://botcraftman.ru/ for further malicious activity, such as phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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%B7%D0%B0%D1%8F%D0%B2%D0%BB%D0%B5%D0%BD%D0%B8%D0%B5+%D0%BD%D0%B0+%D0%B7%D0%B0%D0%B3%D1%80%D0%B0%D0%BD%D0%BF%D0%B0%D1%81%D0%BF%D0%BE%D1%80%D1%82+%D1%81%D1%82%D0%B0%D1%80%D0%BE%D0%B3%D0%BE+%D0%BE%D0%B1%D1%80%D0%B0%D0%B7%D1%86%D0%B0+%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/5//4194/4194028_installapk_skachat_besplatno_na_russkom.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184809_dramaticheskie_zhenskie_monologi_spisok.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4188/4188769_testuy_pri_prieme_na_rabotu_skachat_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_off00024810.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24810 3556 bytes
font_01_sfnt_off00025593.bin
1745333279aeb4035d70c122e7130f1e6afd53720f19ffc843561eeaa1d7ac0d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25593 14448 bytes
font_02_sfnt_off000282a1.bin
af704030b4b2c81454d4f851ec52174ae06bd1e3c0b00438267026f9ed55c622		 pdf-font-stream PDF embedded font (sfnt) at offset 0x282A1 14720 bytes
font_03_sfnt_off0002ae0e.bin
a5d89ac0e2dc253d93a86f02455b1cdc14ea7fcb99153826fd3f471ac85ec108		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AE0E 7032 bytes
font_04_sfnt_off0002c260.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C260 6084 bytes
font_05_sfnt_off0002d1f5.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D1F5 3752 bytes

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