Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f6738342aed4d94…

MALICIOUS

PDF

12.7 KB Created: 2015-07-15 16:24:11 +04:00 Authoring application: DOMPDF
MD5: b2887e13a7a104cfa37288ca92f53b7d SHA-1: 775e374731f52a7c6355cd4b57e93a755c26e9bc SHA-256: 0f6738342aed4d94e97b36e08904201271913363f8ec444b52232f8e963bb9a2
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links pointing to various websites, many of which appear to be part of an SEO link farm. The heuristic 'PDF_SEO_LINK_FARM' indicates a high volume of external links, suggesting a malicious intent to redirect users. While no scripts were explicitly extracted, the nature of the embedded links and the ML classifier's high confidence score point towards a malicious redirection or content delivery scheme, likely initiated via a spearphishing attachment.

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=488.2&urwbo=2&pdf=488
    • http://information32.org/index.php?article=11.1&ugibr=1&pdf=11
    • http://www.dikiliermanoto.com/index.php?article=2291.1&snsfa=1&pdf=2291
    • http://chavagnes.com/index.php?article=2170.2&urwbo=2&pdf=2170
    • http://whereabouts.eu/index.php?article=669.2&ahydd=2&pdf=669
    • http://chavagnes.com/index.php?article=218.2&urwbo=2&pdf=218
    • http://edezigntesting.com/index.php?article=1343.1&vwddn=1&pdf=1343
    • http://unibindsport.no/index.php?article=1510.1&ufueq=1&pdf=1510
    • http://irelia-wein.de/index.php?article=291.1&twakj=1&pdf=291
    • http://chavagnes.com/index.php?article=1155.2&urwbo=2&pdf=1155
    • http://chavagnes.com/index.php?article=1573.2&urwbo=2&pdf=1573
    • http://chavagnes.com/index.php?article=1247.2&urwbo=2&pdf=1247
    • http://www.mantrabeautybar.ca/index.php?article=159.1&rukbv=1&pdf=159
    • http://chavagnes.com/index.php?article=1426.2&urwbo=2&pdf=1426
    • http://www.myrlimo.com/index.php?article=2179.1&sqfkb=1&pdf=2179
    • http://chavagnes.com/index.php?article=1489.2&urwbo=2&pdf=1489
    • http://sestramaca.hr/index.php?article=1583.3&jjcxv=3&pdf=1583

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