Malicious PDF — malware analysis report

Static analysis result for SHA-256 c4d2137b5fb4dfc1…

MALICIOUS

PDF

355.0 KB Created: 2015-08-29 03:22:58 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: c877feae2dfcd68b778f96aa0c92641d SHA-1: af2d1a184f09f43358cf5240ca364b3854270480 SHA-256: c4d2137b5fb4dfc1795e519b201357ccd121896bfbe057286237ca8b6707177d
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by a machine learning classifier and contains a link to known malicious redirector infrastructure. This suggests the document is designed to lure users to a malicious website, likely for phishing or malware distribution. No scripts were extracted, but the presence of a malicious URL is a strong indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9944

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%BE%D0%B1%D1%80%D0%B0%D0%B7%D0%B5%D1%86+%D1%83%D0%B2%D0%B5%D0%B4%D0%BE%D0%BC%D0%BB%D0%B5%D0%BD%D0%B8%D1%8F+%D0%BE+%D0%BF%D1%80%D0%B5%D0%BA%D1%80%D0%B0%D1%89%D0%B5%D0%BD%D0%B8%D0%B8+%D1%81%D1%80%D0%BE%D1%87%D0%BD%D0%BE%D0%B3%D0%BE+%D1%82%D1%80%D1%83%D0%B4%D0%BE%D0%B2%D0%BE%D0%B3%D0%BE+%D0%B4%D0%BE%D0%B3%D0%BE%D0%B2%D0%BE%D1%80%D0%B0&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4818/4818712_scenariy__provedeniya__serebryanoy_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4819/4819203_koftochki__dlya__novorozhdennuyh_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4817/4817831_novokuzneckiy__cirk__raspisanie_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00054766.bin
54413348658dfc3a132ea19224d7bef05d2e69ead345e71bd60968457ad40bc7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x54766 9056 bytes
font_01_sfnt_off0005618e.bin
4332bb15d176b566aaee896628af4090a12467520e2fae2ded4d568355063717		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5618E 13428 bytes

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