Malicious PDF — malware analysis report

Static analysis result for SHA-256 042943519fc1ffba…

MALICIOUS

PDF

145.1 KB Created: 2015-08-24 00:40:15 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 4a3a1353eb1e2821f00fe5de8dc78ffa SHA-1: f01e02fb4a0d6280e035e120033fffa4bd26ec40 SHA-256: 042943519fc1ffba2eea33596807a3e56b887cd56525f31c1a30940522b09d8c
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to known malicious redirector infrastructure, indicating an attempt to deliver a malicious payload or lead the user to a phishing site. The ML classifier also flagged this PDF as malicious. No scripts were extracted, but the embedded URL is the primary indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9713

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=guitar+rig+5+pro+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/6//4693/4693094_kak__igrat__v_.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4693/4693898_bmw__e39_.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4693/4693522_chewwga__09__aktivator_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001f73a.bin
b3e9a05047aa88d843d8f4a8bbe24f0fa31cafaada445cd9a6d17cae0fd5fd3a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1F73A 8940 bytes
font_01_sfnt_off0002100b.bin
57c1632128ea37ff09e37e6275b0afcb2ad6f22ab6d7692cd3945e4450315bd6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2100B 17888 bytes

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