Malicious PDF — malware analysis report

Static analysis result for SHA-256 9241988d48f4cd58…

MALICIOUS

PDF

358.2 KB Created: 2015-08-29 02:48:56 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 6ecd48bb17da6551ee15e4c3c465f7a2 SHA-1: f5ee6419fd6761a932af9da2198e2e221ba9e105 SHA-256: 9241988d48f4cd584fe30fd80aecb701cb1b82ef63ecd6a791da90ea93819cde
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector, indicating an attempt to lure the user to a harmful site. The ML classifier also strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the PDF structure and the presence of a malicious URL suggest a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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%BF%D0%BE%D0%B4%D1%80%D0%BE%D0%B1%D0%BD%D1%8B%D0%B5+%D1%87%D0%B5%D1%80%D1%82%D0%B5%D0%B6%D0%B8+%D0%B0%D0%B2%D1%82%D0%BE%D0%BC%D0%B0%D1%82%D0%B0+%D0%90%D0%9A-74&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4818/4818779_spravochnik__jquery_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4819/4819358_avtobus__ekaterinburg__chelyabinsk_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4817/4817953_raspisanie__yelektrichek__tatarskaya_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005528d.bin
348382666ad850bf9b543f8edf8a68b5cfed3e2ba428b00643f3f05c13732175		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5528D 8396 bytes
font_01_sfnt_off00056b51.bin
ea3203ed35a48e56aa7f2522ed1cfb2bf0cdfa94fe6a63f03de9ab58b457e593		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56B51 14608 bytes

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