Malicious PDF — malware analysis report

Static analysis result for SHA-256 64acc6e049f3ba47…

MALICIOUS

PDF

349.8 KB Created: 2015-08-19 12:05:47 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 8c43f990dfc42131eb5941315d7a8c8e SHA-1: 3955057cde0b4e09e85843d97f062c7252805514 SHA-256: 64acc6e049f3ba474dd03b2eb976b5527b7a4dfb13914ee02e261261475f4746
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector, indicating an attempt to lure the user to a harmful site. The ML classifier also flagged this PDF with high confidence. No scripts were extracted, but the embedded URL is the primary indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9979

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%9F%D1%80%D0%BE%D1%84%D0%BE%D1%82%D0%B1%D0%BE%D1%80+%D0%B2+%D0%B2%D0%BE%D0%B5%D0%BD%D0%BD%D0%BE%D0%B5+%D1%83%D1%87%D0%B8%D0%BB%D0%B8%D1%89%D0%B5+%D1%82%D0%B5%D1%81%D1%82%D1%8B+%D0%BE%D0%BD%D0%BB%D0%B0%D0%B9%D0%BD&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/6//4626/4626458_dmitriy_raspopov_master_klinkov_3_gotovuyy_klinok.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4626/4626440_chitat_onlayn_hroniki_razdolbaya_2_spor_na_balu_volanda.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4626/4626461_deti_nudistuy_podrostki_foto.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00053386.bin
dc460e0c5530b1261956210045d858c5873fc8cbbe01ee2d36253536a1303010		 pdf-font-stream PDF embedded font (sfnt) at offset 0x53386 9780 bytes
font_01_sfnt_off00054dda.bin
9b25fef9f0db654ded646185a643152b189d4ee9b8c55e1eda1c8f09f750b29b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x54DDA 12888 bytes

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