Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a945d53a4dac027…

MALICIOUS

PDF

358.1 KB Created: 2015-08-25 09:08:56 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: a11bcac093fbfa76447d90563e268bfb SHA-1: e934b04c3069c3ee11a2fd9ba864a42cf47191ee SHA-256: 1a945d53a4dac027d0a398ac8aace2336679778ac06e239faa284ea4edcb897c
90 Risk Score

Malware Insights

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

The PDF file 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. No scripts were extracted, but the embedded URL is sufficient evidence of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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%D1%80%D0%BE%D0%B3%D1%80%D0%B0%D0%BC%D0%BC%D0%B0+%D0%B4%D0%BB%D1%8F+%D1%87%D1%82%D0%B5%D0%BD%D0%B8%D1%8F+%D1%84%D0%B0%D0%B9%D0%BB%D0%BE%D0%B2+flv+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/6//4725/4725480_skachat__windows__7_.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4725/4725104_ambarella__evaluation_.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4725/4725667_movavi__video__converter_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000548b7.bin
9c17b8b6edac05d107c68b69b0c2db7407ee90d8705712ea4bef47eb25006ee3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x548B7 10628 bytes
font_01_sfnt_off000565b9.bin
21200274b09556bc375c02eab2a8d18eb7626250de5bf485621c91175d341ad2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x565B9 16668 bytes

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