Malicious PDF — malware analysis report

Static analysis result for SHA-256 53b187a0ae33da94…

MALICIOUS

PDF

184.5 KB Created: 2015-08-08 10:47:43 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 39a66a0f022c03447d1f96143f64e43a SHA-1: c517b371a68b2774543b64eb4e2014e2be4dcee2 SHA-256: 53b187a0ae33da94ad031004dc79eb42637b26002e3b933ff0770235c5f7b039
90 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and contains a link to a known malicious redirector. This suggests the document is designed to lure users to a malicious website. No scripts were extracted, and the document body was not parsable, limiting further analysis of the specific lure.

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%B2%D0%B8%D0%BD%D0%B4%D0%BE%D0%B2%D1%81+81+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE+%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/6//4386/4386069_igra_blokada_igrat_onlayn.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4385/4385966_skachat_taynuy_smolvilya_na_telefon.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384705_rtenicxpsys_skachat.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00023fff.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23FFF 3556 bytes
font_01_sfnt_off00024d82.bin
78a8d353986e1b6489d880c9d92f6977fcc6331166674953fa403cd1f9667a1b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24D82 13908 bytes
font_02_sfnt_off00027941.bin
ea5c9b0151ceb21d072b8a685424aaaecb5836cfdde4038d7ff83443decc09b9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27941 14680 bytes
font_03_sfnt_off0002a409.bin
095aa1fbb1281fe03d3a2ad43ac4ab06065840c4f5ea391da8230ff21cbc1c8a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A409 6972 bytes
font_04_sfnt_off0002b83f.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B83F 6084 bytes
font_05_sfnt_off0002c7d4.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C7D4 3752 bytes

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