Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ace19323fd51e3f…

MALICIOUS

PDF

186.9 KB Created: 2015-07-24 01:14:08 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 9b0b83e18e9fe310a8b9549016d6cd31 SHA-1: a956c7a178a976337feb1462fcd0f1f830fba1eb SHA-256: 5ace19323fd51e3fb123a4c44fa0586ed3c64eb22c3e3e3f736ab25cb79502f2
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector, botcraftman.ru, which is flagged by heuristics. The ML classifier also strongly indicated maliciousness. While no scripts were directly extracted, the PDF structure and the malicious URL suggest an attempt to lure the user to a compromised site, likely for further exploitation or credential harvesting.

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%A1%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B8%D0%B3%D1%80%D1%83+%D1%80%D0%B5%D0%B9%D0%BD%D0%B4%D0%B6%D0%B5%D1%80%D1%8B+%D1%81%D0%B0%D0%BC%D1%83%D1%80%D0%B0%D0%B8+%D0%BD%D0%B0+%D0%B0%D0%BD%D0%B4%D1%80%D0%BE%D0%B8%D0%B4&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185571_drayver_dlya_lexand_st_5350.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185099_doncova_matreshka_v_peryah_skachat_besplatno_fb2.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185133_game_sounds_manifest_txt_skachat.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_off0002452f.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2452F 3556 bytes
font_01_sfnt_off000252b2.bin
734a39416f37534a17d1d4e77df33e2de6e945ba11abb9f75524d98968fbc493		 pdf-font-stream PDF embedded font (sfnt) at offset 0x252B2 15784 bytes
font_02_sfnt_off00028377.bin
c457fcfaab6f548331a7572fefd0d96ae260c7787e9dff2b51ae1aa36573dbb9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x28377 14468 bytes
font_03_sfnt_off0002ae26.bin
81c045908f012182e2da8a74d95c605080762e06ad2940e1f492b1e38cefcedf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AE26 6880 bytes
font_04_sfnt_off0002c1ff.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C1FF 6084 bytes
font_05_sfnt_off0002d194.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D194 3752 bytes

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