Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a13d20105349cb3…

MALICIOUS

PDF

355.5 KB Created: 2015-08-29 12:01:43 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6) First seen: 2021-07-07
MD5: 46363c001aabb5e77c8deb1f3b4c24a1 SHA-1: 9347e102cb49f2f871d5afbab7a55db0a1ea3507 SHA-256: 3a13d20105349cb3d01699c9769b6283cd65c2f4420534c95ecba958bdb48bb7
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing indicating a link to known malicious redirector infrastructure. The embedded URL `http://botcraftman.ru/?lip&keyword=filecheckfix+%D0%B4%D0%BB%D1%8F+gta+4+1070&charset=utf-8` is the primary indicator of malicious intent. While no scripts were explicitly extracted, the nature of the redirector suggests an attempt to lure the user to a compromised site, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9979

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=filecheckfix+%D0%B4%D0%BB%D1%8F+gta+4+1070&charset=utf-8 In PDF document text
    • http://img1.liveinternet.ru/images/attach/c/7//4829/4829964_skachat__klyuch__k_.pdfIn PDF document text
    • http://img0.liveinternet.ru/images/attach/c/7//4830/4830028_demidovich_.pdfIn PDF document text
    • http://img0.liveinternet.ru/images/attach/c/7//4830/4830070_4_____.pdfIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000540aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x540AA 11820 bytes
SHA-256: c8203eb0025e50a2afc4e2c2d3a98fdd0873792fa487cbf959fddaf0fb1d0d9d
font_01_sfnt_off00056269.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x56269 14072 bytes
SHA-256: eed6bf3b255999ebe48e37498c8930d31dda28e4e71594fb89c429c8313b0d04

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