Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc55638bdcef8712…

MALICIOUS

PDF

11.6 KB Created: 2015-07-15 14:36:11 +04:00 Authoring application: DOMPDF
MD5: bb1a5ecb39115adb36139762378f40b2 SHA-1: 58ca016862e9aaa60bfdd3c316f3a7e5c1480205 SHA-256: dc55638bdcef871287a876ad1d099b59aa161877fa8182e292a74eb6b74d49f8
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded URLs, identified by the PDF_SEO_LINK_FARM heuristic. The ML classifier also flagged the document as malicious. The document body contains text related to trading charts, but the primary malicious activity appears to be the redirection to numerous external websites, likely for SEO spam or to host further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8959

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://photo-file.ru/index.php?article=693.1&wehsa=1&pdf=693
    • http://kontraportal.com/index.php?article=1225.1&szjdf=1&pdf=1225
    • http://www.pieuvre-electrique-toulousaine.fr/index.php?article=813.1&otafi=1&pdf=813
    • http://photo-file.ru/index.php?article=1830.1&wehsa=1&pdf=1830
    • http://www.mantrabeautybar.ca/index.php?article=583.1&rukbv=1&pdf=583
    • http://photo-file.ru/index.php?article=1680.1&wehsa=1&pdf=1680
    • http://fotosalon-zoom.ru/index.php?article=1552.4&sufyu=4&pdf=1552
    • http://castres-ski-passion.fr/index.php?article=1103.2&rpbeh=2&pdf=1103
    • http://ve-klubber.dk/index.php?article=1717.1&jzwgf=1&pdf=1717
    • http://photo-file.ru/index.php?article=2231.1&wehsa=1&pdf=2231
    • http://photo-file.ru/index.php?article=1078.1&wehsa=1&pdf=1078
    • http://photo-file.ru/index.php?article=191.1&wehsa=1&pdf=191
    • http://asinvestmentgroup.com/index.php?article=2436.1&jckgl=1&pdf=2436
    • http://photo-file.ru/index.php?article=1700.1&wehsa=1&pdf=1700
    • http://www.fabulaeventos.com.br/index.php?article=1889.1&ipwdu=1&pdf=1889
    • http://photo-file.ru/index.php?article=1469.1&wehsa=1&pdf=1469
    • http://www.motz73.fr/index.php?article=142.1&vrqcc=1&pdf=142

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