Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a6a18c6359105bf…

MALICIOUS

PDF

12.2 KB Created: 2015-07-15 14:40:01 +04:00 Authoring application: DOMPDF
MD5: abcff6d665039a4d3ea8e71a4906927e SHA-1: 02e6b712a48ce6c91ddaba04a4c218c43a3fe4c5 SHA-256: 7a6a18c6359105bf426e87d771edc10af3ab7b58a2a5d754ed7d431e7d9041cb
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a mass external link farm, with numerous URLs pointing to domains that appear to be part of an SEO manipulation scheme. The ML classifier also flagged this PDF as malicious. The embedded URLs are the primary IOCs, suggesting a potential redirection to malicious content or phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8843

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://photo-file.ru/index.php?article=815.1&wehsa=1&pdf=815
    • http://acast.ru/index.php?article=1000.5&zueuf=5&pdf=1000
    • http://stmarkame.org/index.php?article=2343.1&qsacf=1&pdf=2343
    • http://photo-file.ru/index.php?article=1734.1&wehsa=1&pdf=1734
    • http://egliseviechretienne.com/index.php?article=408.5&fkyfd=5&pdf=408
    • http://photo-file.ru/index.php?article=1562.1&wehsa=1&pdf=1562
    • http://aslanasansorleri.com.tr/index.php?article=2451.1&urrqb=1&pdf=2451
    • http://morlockfamily.pl/index.php?article=1237.5&qpowq=5&pdf=1237
    • http://smu12.com/index.php?article=1722.4&ezwhk=4&pdf=1722
    • http://photo-file.ru/index.php?article=678.1&wehsa=1&pdf=678
    • http://photo-file.ru/index.php?article=1410.1&wehsa=1&pdf=1410
    • http://photo-file.ru/index.php?article=1412.1&wehsa=1&pdf=1412
    • http://bluntdistribution.com/index.php?article=2061.1&agzvq=1&pdf=2061
    • http://photo-file.ru/index.php?article=2420.1&wehsa=1&pdf=2420
    • http://gchrismanelectric.com/index.php?article=1980.1&txuhv=1&pdf=1980
    • http://photo-file.ru/index.php?article=1499.1&wehsa=1&pdf=1499
    • http://www.mantrabeautybar.ca/index.php?article=442.1&rukbv=1&pdf=442

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