Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d39819a19cee914…

MALICIOUS

PDF

12.0 KB Created: 2015-07-15 05:48:33 +04:00 Authoring application: DOMPDF
MD5: ce72f1a17b9e052959533ba08c4ef114 SHA-1: ca05f9985afd52487f847dd9a20ad6300a85d0d9 SHA-256: 2d39819a19cee9145d0c17c09797d94bc69fdb756deb50947126e217c3e42ecd
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File

The PDF file contains a large number of embedded URLs, forming a link farm. This is indicative of SEO manipulation or a distribution mechanism for malicious content. The ML classifier also flagged the PDF as malicious with high confidence. No scripts were extracted, and the document body was heavily obfuscated, making it difficult to determine a more specific attack pattern beyond the link farm.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8959

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://primetimerecords.com/index.php?article=738.1&cvsqx=1&pdf=738
    • http://www.mantrabeautybar.ca/index.php?article=374.1&rukbv=1&pdf=374
    • http://marche-espoir.org/index.php?article=1030.6&xonvf=6&pdf=1030
    • http://primetimerecords.com/index.php?article=1953.1&cvsqx=1&pdf=1953
    • http://unibindsport.no/index.php?article=471.1&ufueq=1&pdf=471
    • http://primetimerecords.com/index.php?article=1168.1&cvsqx=1&pdf=1168
    • http://phillipsandcoinc.com/index.php?article=194.1&sxlyu=1&pdf=194
    • http://lifesweetner.es/index.php?article=2006.1&wddqo=1&pdf=2006
    • http://howtoexcelinlife.com/index.php?article=284.1&ytcwy=1&pdf=284
    • http://primetimerecords.com/index.php?article=2215.1&cvsqx=1&pdf=2215
    • http://primetimerecords.com/index.php?article=2282.1&cvsqx=1&pdf=2282
    • http://primetimerecords.com/index.php?article=1951.1&cvsqx=1&pdf=1951
    • http://anaprieto.com/index.php?article=2019.2&yhxyj=2&pdf=2019
    • http://primetimerecords.com/index.php?article=1348.1&cvsqx=1&pdf=1348
    • http://massiv-holz-moebel.de/index.php?article=122.1&onxqu=1&pdf=122
    • http://primetimerecords.com/index.php?article=1101.1&cvsqx=1&pdf=1101
    • http://marjangecevic.com/index.php?article=1744.1&vgslo=1&pdf=1744

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