Malicious PDF — malware analysis report

Static analysis result for SHA-256 057f128723023940…

MALICIOUS

PDF

383.0 KB Created: 2015-08-27 23:41:48 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: be8e50f9ebe2f310c2996ae30072dfb0 SHA-1: d7f4181ed110820d2ed422a81727f617b75a40bb SHA-256: 057f1287230239404b550a4f8246110e17dc1c04eb1c944a540ce91c6e226238
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 lead the user to a malicious download. The ML classifier also flagged this PDF with high confidence. No scripts were extracted, but the presence of the malicious URL is sufficient evidence of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9915

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+garrys+mod+12+%D1%87%D0%B5%D1%80%D0%B5%D0%B7+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82+%D1%80%D1%83%D1%81%D1%81%D0%BA%D0%B0%D1%8F+%D0%B2%D0%B5%D1%80%D1%81%D0%B8%D1%8F&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/7//4787/4787961_mx__vs__atv_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4787/4787757_kratkosrochnoe__planirovanie__po_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4787/4787906_sopostavitelnuyy__analiz__stihotvoreniy_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005b677.bin
8a22f62b79007d72b806bc09d8ca7fcc533e2709c64338a282d738bb7e59e6ab		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B677 9928 bytes
font_01_sfnt_off0005d29c.bin
fb5a3c432c0ebc2ba805655d0317207a0322dce38e54bb02e6a56a983b5d63a7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D29C 13668 bytes

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