Malicious PDF — malware analysis report

Static analysis result for SHA-256 c676385782066797…

MALICIOUS

PDF

11.0 KB Created: 2015-07-15 16:24:05 +04:00 Authoring application: DOMPDF
MD5: 82b83fdc90a56b0dec06941178e986b0 SHA-1: f3f1637c228852a5b1f096deb4f3d7b7d456f322 SHA-256: c676385782066797e7d616c1bd7b136e5e3c71ee7377cd11856f82c62f70c5db
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 document body, though partially obfuscated, also contains these URLs and text related to trading robots and options, suggesting a lure to external, potentially malicious, websites. The ML classifier also flagged this PDF as malicious with high confidence. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9059

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=72.2&urwbo=2&pdf=72
    • http://hsaig.com/index.php?article=1646.1&gpfes=1&pdf=1646
    • http://konserborsasi.com/index.php?article=1869.1&ntrdf=1&pdf=1869
    • http://chavagnes.com/index.php?article=2477.2&urwbo=2&pdf=2477
    • http://stmarkame.org/index.php?article=2183.1&qsacf=1&pdf=2183
    • http://chavagnes.com/index.php?article=484.2&urwbo=2&pdf=484
    • http://marche-espoir.org/index.php?article=57.6&xonvf=6&pdf=57
    • http://radiocepea.com/index.php?article=2042.1&pvbba=1&pdf=2042
    • http://gradespay.com/index.php?article=2121.1&cibeh=1&pdf=2121
    • http://chavagnes.com/index.php?article=2124.2&urwbo=2&pdf=2124
    • http://chavagnes.com/index.php?article=1918.2&urwbo=2&pdf=1918
    • http://chavagnes.com/index.php?article=1830.2&urwbo=2&pdf=1830
    • http://www.mantrabeautybar.ca/index.php?article=2167.1&rukbv=1&pdf=2167
    • http://chavagnes.com/index.php?article=1972.2&urwbo=2&pdf=1972
    • http://www.motz73.fr/index.php?article=2497.1&vrqcc=1&pdf=2497
    • http://chavagnes.com/index.php?article=1049.2&urwbo=2&pdf=1049
    • http://whereabouts.eu/index.php?article=2224.2&ahydd=2&pdf=2224

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