Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a5b60da85c4e271…

MALICIOUS

PDF

11.2 KB Created: 2015-07-15 16:25:52 +04:00 Authoring application: DOMPDF
MD5: f44f9e4d4a08ceed37963a54c3369dac SHA-1: 5e637c152a20e86b63a13dd099ef9184785b8fac SHA-256: 7a5b60da85c4e27184ddf407b507ca872ca23b5d7941adf55b5c905a4f21df9a
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a large number of embedded URLs, many pointing to domains with similar URL structures, suggesting a link farm or SEO manipulation tactic. The ML classifier also flagged this PDF as malicious. While no scripts were explicitly extracted, the PDF structure and embedded URLs indicate a high likelihood of redirecting users to potentially malicious external sites, possibly for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9383

Heuristics 2

  • 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.
  • 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://chavagnes.com/index.php?article=995.2&urwbo=2&pdf=995
    • http://www.mantrabeautybar.ca/index.php?article=10.1&rukbv=1&pdf=10
    • http://marche-espoir.org/index.php?article=1747.6&xonvf=6&pdf=1747
    • http://chavagnes.com/index.php?article=1986.2&urwbo=2&pdf=1986
    • http://wbus.nl/index.php?article=684.7&exicf=7&pdf=684
    • http://chavagnes.com/index.php?article=1830.2&urwbo=2&pdf=1830
    • http://pleasereadbible.com/index.php?article=1048.1&ofdkh=1&pdf=1048
    • http://149clean.com/index.php?article=870.2&lkxaf=2&pdf=870
    • http://howtoexcelinlife.com/index.php?article=618.1&ytcwy=1&pdf=618
    • http://chavagnes.com/index.php?article=1196.2&urwbo=2&pdf=1196
    • http://chavagnes.com/index.php?article=578.2&urwbo=2&pdf=578
    • http://chavagnes.com/index.php?article=1075.2&urwbo=2&pdf=1075
    • http://fotosalon-zoom.ru/index.php?article=1143.4&sufyu=4&pdf=1143
    • http://chavagnes.com/index.php?article=1932.2&urwbo=2&pdf=1932
    • http://fabrykablysku.com/index.php?article=2415.1&otolk=1&pdf=2415
    • http://chavagnes.com/index.php?article=2363.2&urwbo=2&pdf=2363
    • http://ballykeeljoinery.co.uk/index.php?article=617.1&yxhkr=1&pdf=617

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