Malicious PDF — malware analysis report

Static analysis result for SHA-256 881c25f1fe47cf0e…

MALICIOUS

PDF

368.2 KB Created: 2015-08-29 11:33:11 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6) First seen: 2021-07-07
MD5: 4aec7ab4e03916ca170e014eb7adb6c2 SHA-1: 75ace9d2a37615d7e553fb25e217fcf9ebf9e569 SHA-256: 881c25f1fe47cf0ed5392f00917e1b578a54de5dc65a5753da359924250e7641
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains an embedded link that redirects to a known malicious domain, indicating an attempt to lure the user to a compromised site. While no scripts were explicitly extracted, the PDF structure and the malicious redirector strongly suggest an intent to deliver a secondary payload or phish for information. The ML classifier also flagged this PDF with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

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%80%D0%B0%D1%81%D0%BF%D0%BE%D0%BB%D0%BE%D0%B6%D0%B5%D0%BD%D0%B8%D0%B5+%D0%BF%D1%80%D0%B5%D0%B4%D0%BE%D1%85%D1%80%D0%B0%D0%BD%D0%B8%D1%82%D0%B5%D0%BB%D0%B5%D0%B9+volkswagen+t5&charset=utf-8 In PDF document text
    • http://img1.liveinternet.ru/images/attach/c/7//4829/4829970_mortal__kombat_.pdfIn PDF document text
    • http://img0.liveinternet.ru/images/attach/c/7//4830/4830233_chitat__sinica__nv_.pdfIn PDF document text
    • http://img0.liveinternet.ru/images/attach/c/7//4830/4830113_skachat__ie8__dlya_.pdfIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005714d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5714D 9788 bytes
SHA-256: aa67735e901ffd0f84e7bc36d8e3f10c51a79841594c789af09e55628721e5de
font_01_sfnt_off00058c1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x58C1D 17320 bytes
SHA-256: 40a21c2bcdb355b29951de10173bf9f381ebf5c90826f4dcdd58c04f22faf285

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