Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2a529c70a19688e…

MALICIOUS

PDF

351.6 KB Created: 2015-08-29 12:10:00 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6) First seen: 2021-07-07
MD5: 502f78f901237ef47a19b375fbeeb2f3 SHA-1: 70231c13fdfa901679a67889b76b0e0b38d2bfc4 SHA-256: a2a529c70a19688e90055d80eacead2da09c0d658fc919fbec127165ecf83e82
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by a critical heuristic for linking to known malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness. The embedded URL is the primary indicator of malicious intent, likely serving as a lure to a phishing or malware distribution site.

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=%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B8%D0%B3%D1%80%D1%8B+%D0%BD%D0%B0+%D1%82%D0%B5%D0%BB%D0%B5%D1%84%D0%BE%D0%BD+%D1%81%D0%B0%D0%BC%D1%81%D1%83%D0%BD%D0%B3+%D1%813011&charset=utf-8 In PDF document text
    • http://img1.liveinternet.ru/images/attach/c/7//4829/4829867_testuy__po__francuzskomu_.pdfIn PDF document text
    • http://img0.liveinternet.ru/images/attach/c/7//4830/4830819_tancuy__na__tnt_.pdfIn PDF document text
    • http://img0.liveinternet.ru/images/attach/c/7//4830/4830581_raspolozhenie__predohraniteley__volkswagen_.pdfIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00053ab6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x53AB6 7856 bytes
SHA-256: 18b9ef5e9cd83b980e45b780d8d3abb8970b50ea6402669de0fcc8653e8b73bd
font_01_sfnt_off0005518c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5518C 14764 bytes
SHA-256: ca9b70f1c442a54e7a3482ef343a5a23df415d0f0253b96a116c8527fef60f28

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