Malicious PDF — malware analysis report

Static analysis result for SHA-256 14cfa71d7b3c9426…

MALICIOUS

PDF

352.7 KB Created: 2015-08-27 09:46:21 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: d05d5ddd6d4792a87e379560243a90e0 SHA-1: 681820cc88e00e6ca7481b1f1780e8a564be2390 SHA-256: 14cfa71d7b3c9426b25ab12ea3d9a4d76b2e97e695a21706abf28a5737248b4f
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector, botcraftman.ru, which is presented as a search result for downloading drivers. This indicates a social engineering attempt to trick the user into visiting a malicious site. While no scripts were explicitly extracted, the PDF structure and the malicious link suggest an attempt to deliver a secondary payload or redirect the user to a phishing or malware download page.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9979

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%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B4%D1%80%D0%B0%D0%B9%D0%B2%D0%B5%D1%80%D0%B0+%D0%B4%D0%BB%D1%8F+asus+k53s&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/7//4771/4771979_shema__avr__na_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4771/4771809_aleksey__panin__goluye_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4771/4771898_pourochnoe__planirovanie__matematika_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00053fa0.bin
fde7d8cf8fc75b94911ba33d982129f074eb81857f56911962d86916ab22f94d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x53FA0 9132 bytes
font_01_sfnt_off000559a8.bin
a2d70a2ef3f92a41c20510c55bb14410c30b6c910da9251ff2cddef4e4916f4e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x559A8 13180 bytes

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