Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e32ab50d2151c7d…

MALICIOUS

PDF

11.8 KB Created: 2015-07-16 08:34:02 +03:00 Authoring application: DOMPDF
MD5: 055eb61f380d703fee21e9662c6ea0c5 SHA-1: 9cef56068ad9c4a0662a3adab99fb0d5c42b1d9f SHA-256: 6e32ab50d2151c7def61d18652c8e114a75fc0e16aa609bfdf5dbd2a2bbf700b
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs, identified by the PDF_SEO_LINK_FARM heuristic, which suggests a link farm or SEO manipulation attempt. The ML classifier also flagged the document as malicious. The document body contains garbled text and the URLs, which are the primary indicators of malicious activity.

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://ve-klub.dk/index.php?article=2116.3&lnoyp=3&pdf=2116
    • http://tempusfugit.no/index.php?article=1975.2&awylk=2&pdf=1975
    • http://www.biogetica.info/index.php?article=1308.1&oebwf=1&pdf=1308
    • http://ve-klub.dk/index.php?article=1130.3&lnoyp=3&pdf=1130
    • http://dmrranch.com/index.php?article=16.3&qasjf=3&pdf=16
    • http://ve-klub.dk/index.php?article=982.3&lnoyp=3&pdf=982
    • http://go2work.no/index.php?article=2140.1&abdkr=1&pdf=2140
    • http://www.masajestorreon.com/index.php?article=1413.1&gcaff=1&pdf=1413
    • http://hypnoseforedrag.dk/index.php?article=908.1&ffvza=1&pdf=908
    • http://ve-klub.dk/index.php?article=1573.3&lnoyp=3&pdf=1573
    • http://ve-klub.dk/index.php?article=89.3&lnoyp=3&pdf=89
    • http://ve-klub.dk/index.php?article=1608.3&lnoyp=3&pdf=1608
    • http://www.cmpartners.com.au/index.php?article=2245.1&vhbyw=1&pdf=2245
    • http://ve-klub.dk/index.php?article=592.3&lnoyp=3&pdf=592
    • http://winterhartepalmen.net/index.php?article=1065.1&yhjjy=1&pdf=1065
    • http://ve-klub.dk/index.php?article=294.3&lnoyp=3&pdf=294
    • http://zahnaerztin-stolp-weingarten.de/index.php?article=1524.1&kieao=1&pdf=1524

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