Malicious PDF — malware analysis report

Static analysis result for SHA-256 f420da62ba9b7682…

MALICIOUS

PDF

185.4 KB Created: 2015-08-08 09:46:45 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: b7b8d28b22ddeac910cdaf9a12cb3e19 SHA-1: e9f326b6c41c971b98f3a6e89ef07b2cd0ca289c SHA-256: f420da62ba9b76827bc67319ec268c9e7fea0be5e9a86b99955f4ca8fe1d26bb
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file was flagged by multiple heuristics as malicious, specifically for containing a link to known malicious redirector infrastructure. The embedded URL points to 'http://botcraftman.ru/', which is identified as a malicious redirector. This suggests the document's primary purpose is to lure the user to a potentially harmful website. No scripts were extracted from this sample.

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%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D1%80%D1%83%D1%81%D1%81%D0%BA%D0%B8%D0%B5+%D0%BC%D0%B5%D0%BB%D0%BE%D0%B4%D1%80%D0%B0%D0%BC%D1%8B+%D0%BD%D0%B0+%D0%BF%D0%BB%D0%B0%D0%BD%D1%88%D0%B5%D1%82&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/6//4383/4383766_kak_skachat_muzuyku_na_aypad_s_vkontakte.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4383/4383724_riven_gayd_2015.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4232/4232304_dnevnik_samokontrolya_diabetika_skachat.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000242d4.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x242D4 3556 bytes
font_01_sfnt_off00025057.bin
3f223e5aa80b36b57e6c3f2b0f926d4ab77122b2246f81ed557990f88a085080		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25057 14644 bytes
font_02_sfnt_off00027db5.bin
8c5e5bc4674cee60ec6c1619e60533ff44be00efca6b5f228c587d2f19a61a12		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27DB5 14520 bytes
font_03_sfnt_off0002a884.bin
b60a58106ad23944d7be408fb21a47ddad130f33a436c9fcc4fcb9568f47b83a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A884 6736 bytes
font_04_sfnt_off0002bbe9.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BBE9 6084 bytes
font_05_sfnt_off0002cb7e.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CB7E 3752 bytes

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