Malicious PDF — malware analysis report

Static analysis result for SHA-256 88a474ef54628655…

MALICIOUS

PDF

12.2 KB Created: 2015-07-15 14:40:10 +04:00 Authoring application: DOMPDF
MD5: 87026178647927e4008bca89199fc42e SHA-1: 8c8e09be35e9ebd6bdc973f7715b799c6a1ec2e6 SHA-256: 88a474ef546286553226f80dbb93a867994d19a04fe85369c6389ed99bd88d51
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of external links, many pointing to SEO-optimized article pages, suggesting a link farm or traffic redirection scheme. The document body, though partially obfuscated, contains the phrase "How to win in binary options" and embedded URLs, indicating a lure to potentially malicious or scam-related websites. The ML classifier also flagged the PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8883

Heuristics 3

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://photo-file.ru/index.php?article=1093.1&wehsa=1&pdf=1093
    • http://www.wallart.com.es/index.php?article=2492.1&dxunj=1&pdf=2492
    • http://sennexdesign.com/index.php?article=53.1&nonzs=1&pdf=53
    • http://photo-file.ru/index.php?article=853.1&wehsa=1&pdf=853
    • http://dhyansuman.com/index.php?article=1336.8&xvanh=8&pdf=1336
    • http://photo-file.ru/index.php?article=90.1&wehsa=1&pdf=90
    • http://www.mantrabeautybar.ca/index.php?article=2224.1&rukbv=1&pdf=2224
    • http://stylereaction.com/index.php?article=1918.1&fipzp=1&pdf=1918
    • http://fotosalon-zoom.ru/index.php?article=1870.4&sufyu=4&pdf=1870
    • http://photo-file.ru/index.php?article=1335.1&wehsa=1&pdf=1335
    • http://photo-file.ru/index.php?article=848.1&wehsa=1&pdf=848
    • http://photo-file.ru/index.php?article=2496.1&wehsa=1&pdf=2496
    • http://techaccesscorp.com/index.php?article=48.2&dupth=2&pdf=48
    • http://photo-file.ru/index.php?article=308.1&wehsa=1&pdf=308
    • http://www.ivanandpamela.com/index.php?article=1640.1&tekgj=1&pdf=1640
    • http://photo-file.ru/index.php?article=1555.1&wehsa=1&pdf=1555
    • http://weterynarz-gdynia.pl/index.php?article=1621.2&axpfr=2&pdf=1621

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