Malicious PDF — malware analysis report

Static analysis result for SHA-256 4760ac6b4de6ad72…

MALICIOUS

PDF

11.5 KB Created: 2015-07-15 14:36:24 +04:00 Authoring application: DOMPDF
MD5: c5b41ccdb453fccaccb5843346140936 SHA-1: 8b00f24239344ba3a8a03839d378886072942575 SHA-256: 4760ac6b4de6ad72e72760542fc5c3a715ad214c1ead7a041f609dd7a6ef4188
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, forming a link farm designed to direct users to various websites. The heuristic 'PDF_SEO_LINK_FARM' specifically identifies this behavior, indicating a likely attempt to manipulate search engine results or drive traffic to potentially malicious sites. The ML classifier also flagged the PDF as malicious with high confidence. No scripts were extracted from this sample.

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://photo-file.ru/index.php?article=2283.1&wehsa=1&pdf=2283
    • http://hillcrestchurch.info/index.php?article=2227.1&jhrre=1&pdf=2227
    • http://kemerimalati.com/index.php?article=220.3&rlrsj=3&pdf=220
    • http://photo-file.ru/index.php?article=903.1&wehsa=1&pdf=903
    • http://www.mantrabeautybar.ca/index.php?article=2099.1&rukbv=1&pdf=2099
    • http://photo-file.ru/index.php?article=1973.1&wehsa=1&pdf=1973
    • http://cuisiplans.com/index.php?article=2338.2&kjbws=2&pdf=2338
    • http://fabrykablysku.com/index.php?article=1974.1&otolk=1&pdf=1974
    • http://ura-sandoz.com/index.php?article=2068.1&nydkb=1&pdf=2068
    • http://photo-file.ru/index.php?article=2332.1&wehsa=1&pdf=2332
    • http://photo-file.ru/index.php?article=2109.1&wehsa=1&pdf=2109
    • http://photo-file.ru/index.php?article=743.1&wehsa=1&pdf=743
    • http://centrodepsicoterapiaintegral.com.mx/index.php?article=1648.1&cpuqr=1&pdf=1648
    • http://photo-file.ru/index.php?article=1730.1&wehsa=1&pdf=1730
    • http://massiv-holz-moebel.de/index.php?article=1676.1&onxqu=1&pdf=1676
    • http://photo-file.ru/index.php?article=85.1&wehsa=1&pdf=85
    • http://www.myrlimo.com/index.php?article=1589.1&sqfkb=1&pdf=1589

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