Malicious PDF — malware analysis report

Static analysis result for SHA-256 1914ff6a2751704b…

MALICIOUS

PDF

368.1 KB Created: 2015-08-25 09:19:50 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 34d8f3947b2790be57f40e45b0ac676b SHA-1: d4f32db7304eb9bf59b26a59a2e7e727e6899754 SHA-256: 1914ff6a2751704b85d3e6b42badfbe23e3e379ce169502ac3048f93a6dd2ab3
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a link to a known malicious redirector, botcraftman.ru. This indicates a phishing or malware distribution attempt. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the presence of the malicious URL is sufficient evidence for this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

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%BC%D0%B0%D1%82%D0%B5%D1%80%D0%BD%D1%8B%D0%B5+%D1%87%D0%B0%D1%81%D1%82%D1%83%D1%88%D0%BA%D0%B8+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/6//4725/4725550_rasteniya__protiv__zombi_.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4726/4726105_ciferblat__dlya__nastennuyh_.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4726/4726131_assassins__creed__3_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000571db.bin
de25f59fab8711847fa87ce22a99eb1ff05518071806c8b1ee4647f4a77c3aee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x571DB 10056 bytes
font_01_sfnt_off00058cfe.bin
0c985e90673c0f521cb5ea6f92dd6da8f18006589aaf07ec97e48945b67c0c5f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x58CFE 17024 bytes

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