Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6af285a2b001fab…

MALICIOUS

PDF

11.5 KB Created: 2015-07-15 14:41:33 +04:00 Authoring application: DOMPDF
MD5: 84aa6ceef0e0526de94006edbd7a2177 SHA-1: dd7eaebff2b77cd9bb402a26054c8981c2a3853c SHA-256: e6af285a2b001fab006bbace04f14697dda1a40c101a28fc589627e74f920237
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious File

The PDF file contains a large number of embedded links to various websites, as indicated by the PDF_SEO_LINK_FARM heuristic. The ML classifier also flagged this PDF as malicious with a high probability. The document body, though truncated, contains references to financial topics and includes many of the same URLs, suggesting a lure to potentially malicious or scam-related content. 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=1641.1&wehsa=1&pdf=1641
    • http://munchkinmoments.com.my/index.php?article=1911.1&itqlp=1&pdf=1911
    • http://www.mantrabeautybar.ca/index.php?article=1826.1&rukbv=1&pdf=1826
    • http://photo-file.ru/index.php?article=1023.1&wehsa=1&pdf=1023
    • http://weterynarz-gdynia.pl/index.php?article=1343.2&axpfr=2&pdf=1343
    • http://photo-file.ru/index.php?article=1061.1&wehsa=1&pdf=1061
    • http://michele-jimenez.com/index.php?article=82.1&dwpcn=1&pdf=82
    • http://ehsaasmhs.org/index.php?article=942.1&qcugi=1&pdf=942
    • http://hotrodderclassifieds.com/index.php?article=272.1&hjjgr=1&pdf=272
    • http://photo-file.ru/index.php?article=718.1&wehsa=1&pdf=718
    • http://photo-file.ru/index.php?article=999.1&wehsa=1&pdf=999
    • http://photo-file.ru/index.php?article=2044.1&wehsa=1&pdf=2044
    • http://dfnotebooks.com.br/index.php?article=410.1&gatis=1&pdf=410
    • http://photo-file.ru/index.php?article=662.1&wehsa=1&pdf=662
    • http://barrainformativa.com/index.php?article=187.2&eyxlg=2&pdf=187
    • http://photo-file.ru/index.php?article=1431.1&wehsa=1&pdf=1431
    • http://shoppinga.it/index.php?article=370.1&nznbl=1&pdf=370

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