Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b0997f340eaee7d…

MALICIOUS

PDF

12.5 KB Created: 2015-07-15 16:25:16 +04:00 Authoring application: DOMPDF
MD5: 6bf0085ae07bfe77021d4740b933f3a2 SHA-1: 573f77c4a045fffb78dc26deec7f1d663efea390 SHA-256: 8b0997f340eaee7d9434dc742e05a2ee91d61af123fcb79085255ce109fa3800
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file was flagged by a machine learning classifier and contains a significant number of embedded URLs, forming a link farm. This suggests a malicious intent, likely for SEO manipulation or to redirect users to potentially harmful sites. No scripts were extracted, and the document body was heavily obfuscated, limiting further analysis of the specific lure.

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=2108.2&urwbo=2&pdf=2108
    • http://www.mantrabeautybar.ca/index.php?article=2212.1&rukbv=1&pdf=2212
    • http://ipestka.pl/index.php?article=1883.1&qsxtx=1&pdf=1883
    • http://chavagnes.com/index.php?article=1062.2&urwbo=2&pdf=1062
    • http://munchkinmoments.com.my/index.php?article=296.1&itqlp=1&pdf=296
    • http://chavagnes.com/index.php?article=1524.2&urwbo=2&pdf=1524
    • http://photo-file.ru/index.php?article=1823.1&wehsa=1&pdf=1823
    • http://www.motz73.fr/index.php?article=2098.1&vrqcc=1&pdf=2098
    • http://stylereaction.com/index.php?article=806.1&fipzp=1&pdf=806
    • http://chavagnes.com/index.php?article=69.2&urwbo=2&pdf=69
    • http://chavagnes.com/index.php?article=101.2&urwbo=2&pdf=101
    • http://chavagnes.com/index.php?article=2232.2&urwbo=2&pdf=2232
    • http://urbanindoorgs.com/index.php?article=2363.1&lkbfl=1&pdf=2363
    • http://chavagnes.com/index.php?article=1080.2&urwbo=2&pdf=1080
    • http://top-rice-cooker.com/index.php?article=1706.1&ratfe=1&pdf=1706
    • http://chavagnes.com/index.php?article=1431.2&urwbo=2&pdf=1431
    • http://fresh2death.com/index.php?article=1004.1&lzrlo=1&pdf=1004

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