Malicious PDF — malware analysis report

Static analysis result for SHA-256 83d880984cbba49a…

MALICIOUS

PDF

376.7 KB Created: 2015-08-29 12:39:05 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6) First seen: 2021-07-07
MD5: f66cb5fe26cda63c87f9d6a58eeed490 SHA-1: d25aaed4471f4c3e25213e63937298c74b1ceedc SHA-256: 83d880984cbba49a1e8cfa4a1ae5e5bbff1639cf2d19a1b56455bdfc31d250a5
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/..., is likely used to deliver a secondary payload or redirect to a phishing page. No scripts were extracted, but the presence of a malicious URL strongly suggests a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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%BA%D1%80%D0%B0%D1%82%D0%BA%D0%BE%D0%B5+%D1%81%D0%BE%D0%B4%D0%B5%D1%80%D0%B6%D0%B0%D0%BD%D0%B8%D0%B5+%D1%80%D0%B0%D1%81%D1%81%D0%BA%D0%B0%D0%B7%D0%B0+%D1%82%D0%B8%D0%BC%D1%83%D1%80+%D0%B8+%D0%B5%D0%B3%D0%BE+%D0%BA%D0%BE%D0%BC%D0%B0%D0%BD%D0%B4%D0%B0&charset=utf-8 In PDF document text
    • http://img1.liveinternet.ru/images/attach/c/7//4831/4831302_perenos__informacii__na_.pdfIn PDF document text
    • http://img1.liveinternet.ru/images/attach/c/7//4829/4829932_scenariy__prazdnika__den_.pdfIn PDF document text
    • http://img1.liveinternet.ru/images/attach/c/7//4831/4831030_raspisanie__avtobusov_.pdfIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00059eae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x59EAE 8780 bytes
SHA-256: 65d71d03ef04d03c70e1a7bb746194f56e837cbd6b7df35181ad2887a49fa405
font_01_sfnt_off0005b829.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B829 13924 bytes
SHA-256: 45b8794bacc5b1968401d5489225317a40350deefcb4388c53f3dea002af32fa

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