Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba44bee0de2857cc…

MALICIOUS

PDF

361.9 KB Created: 2015-08-25 15:37:58 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: e0cb055e630a5662b71863557066f146 SHA-1: 32846861caad5c6ae5b587b811b761ba7ee22f18 SHA-256: ba44bee0de2857cc807a42aea5f9efb06d161fc41b966df62cb9d29a2ecf84fd
92 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and contains a link to a known malicious redirector. The embedded URL `http://botcraftman.ru/?lip&keyword=%D0%BE%D1%82%D0%B2%D0%B5%D1%82%D1%8B+%D0%BD%D0%B0+%D0%BF%D1%81%D0%B8%D1%85%D0%BE%D0%BB%D0%BE%D0%B3%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B5+%D1%82%D0%B5%D1%81%D1%82%D1%8B&charset=utf-8` is the primary indicator of malicious intent. The document body is heavily obfuscated and does not provide clear textual clues about its purpose.

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%BE%D1%82%D0%B2%D0%B5%D1%82%D1%8B+%D0%BD%D0%B0+%D0%BF%D1%81%D0%B8%D1%85%D0%BE%D0%BB%D0%BE%D0%B3%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B5+%D1%82%D0%B5%D1%81%D1%82%D1%8B&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4732/4732176_skachat__knigu__bobbi_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4732/4732064_rustam__gaipov__mp3_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4732/4732368_sabantuy__v__kazani_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005636f.bin
e5b9cbffeec24f652537935fc6fc870ab52a5898f718148ded75b061dfa03c9b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5636F 9344 bytes
font_01_sfnt_off00057d84.bin
999e52fbd2ba0762a194390ea720bab310ebcb81c219ad49e41d636d1b3c3982		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57D84 13424 bytes

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