Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ded53eb2810c7f3…

MALICIOUS

PDF

365.8 KB Created: 2015-08-27 09:39:12 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 57d82fb21e72a4fe09da0237b98ca323 SHA-1: 2450c0218783de3c753f94120a4677e922d2532e SHA-256: 5ded53eb2810c7f34d16a8284eb2d14836f4e7a90f72bdd96f085d8ab41a4ebd
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector URL, indicating an attempt to lure the user to a harmful site. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the embedded URL is sufficient evidence of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

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%A0%D0%B5%D1%86%D0%B5%D0%BF%D1%82%D1%8B+%D0%B4%D0%BB%D1%8F+%D0%BC%D1%83%D0%BB%D1%8C%D1%82%D0%B8%D0%B2%D0%B0%D1%80%D0%BA%D0%B8+%D0%BF%D0%BE%D0%BB%D0%B0%D1%80%D0%B8%D1%81+%D0%BE%D0%BC%D1%81+0509+%D0%B0%D0%B4+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/7//4771/4771817_zhizn__rasskazannaya__eyu_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4771/4771778_skachat__igru__evro_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4771/4771793_skachat__pornofilmuy__na_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005729c.bin
78581b0445955398034aa582d3c9cb3a9dceb2773e01169f2fcb2d8710624c1c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5729C 8212 bytes
font_01_sfnt_off00058aa9.bin
7be47eb95b5d3c2ca282cd342f2ffae6cfc6a21ccc8dd337d62ed33ba1fc310f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x58AA9 13912 bytes

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