Malicious PDF — malware analysis report

Static analysis result for SHA-256 fccb2a367118b434…

MALICIOUS

PDF

12.7 KB Created: 2015-07-15 16:23:22 +04:00 Authoring application: DOMPDF
MD5: 1a141f0111e7bee4c1d818aa435a93d8 SHA-1: 710ca634cee1180eab42cdea79ef13361d689291 SHA-256: fccb2a367118b434a76d536466c3eac71b46f35af971ad5d60f669319a56337c
90 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier as malicious. Static analysis revealed a large number of embedded external links, characteristic of a link farm or a distribution mechanism for further malicious content. The document body contains garbled text, suggesting it is not intended for direct user consumption but rather as a container for these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8835

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=2035.2&urwbo=2&pdf=2035
    • http://www.wslab.co/index.php?article=3.1&fvtfv=1&pdf=3
    • http://shoppinga.it/index.php?article=2195.1&nznbl=1&pdf=2195
    • http://chavagnes.com/index.php?article=113.2&urwbo=2&pdf=113
    • http://pamojaexpeditions.com/index.php?article=1432.2&lqpte=2&pdf=1432
    • http://chavagnes.com/index.php?article=300.2&urwbo=2&pdf=300
    • http://larasstore.com/index.php?article=1095.2&qcpsq=2&pdf=1095
    • http://regionori.ru/index.php?article=2061.1&lcnlt=1&pdf=2061
    • http://urbanindoorgs.com/index.php?article=1577.1&lkbfl=1&pdf=1577
    • http://chavagnes.com/index.php?article=634.2&urwbo=2&pdf=634
    • http://chavagnes.com/index.php?article=1669.2&urwbo=2&pdf=1669
    • http://chavagnes.com/index.php?article=879.2&urwbo=2&pdf=879
    • http://www.mantrabeautybar.ca/index.php?article=304.1&rukbv=1&pdf=304
    • http://chavagnes.com/index.php?article=1966.2&urwbo=2&pdf=1966
    • http://bmwt.pt/index.php?article=1090.2&qvacx=2&pdf=1090
    • http://chavagnes.com/index.php?article=107.2&urwbo=2&pdf=107
    • http://casarosso.com.tr/index.php?article=831.1&gdggi=1&pdf=831

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