Malicious PDF — malware analysis report

Static analysis result for SHA-256 258b07b7b9fb41bb…

MALICIOUS

PDF

16.3 KB Created: 2020-03-20 13:34:29 +00:00 Authoring application: mPDF 5.7 First seen: 2021-06-17
MD5: 6f81f4a38de3e2c90804d99e71e73fb4 SHA-1: 378363e75a6169b561a891457338bfc719ebe514 SHA-256: 258b07b7b9fb41bb25dab7a3fff85bb7ede4f8d44283a92b0f38741003af5a7b
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs, identified as a link farm. These URLs point to various book titles, suggesting a potential SEO manipulation or content hosting scheme. The ML classifier also flagged this PDF as malicious, indicating a high probability of malicious intent. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9811

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://solosopos.myhome.cx/8859853859855858/The-Christmas-Mail-Order-Bride-Holiday-Mail-Order-Brides-1-by-Kit-Morgan.pdf In PDF document text
    • http://solosopos.myhome.cx/7856858859855852/Mail-Order-Bride-Love-Honor-amp-Keep-Her---A-Sweet-Historical-Western-Romance-Faithful-Mail-Order-Bride-Series-by-Rose-Dumont.pdfIn PDF document text
    • http://solosopos.myhome.cx/1850859854854859856/The-Silverback-s-Christmas-Bride-Holiday-Mail-Order-Mates-6-by-Lola-Kidd.pdfIn PDF document text
    • http://solosopos.myhome.cx/2854855859852853/Wyoming-Bride-Mail-Order-Brides-2-by-Joan-Johnston.pdfIn PDF document text
    • http://solosopos.myhome.cx/9852857858850850/The-Rancher-s-bride-Big-Bertha-s-Mail-Order-Brides-3-by-Faith-Johnson.pdfIn PDF document text
    • http://solosopos.myhome.cx/8855853858851851/Caleb-s-Mail-Order-Bride-by-Cia-Leah.pdfIn PDF document text
    • http://solosopos.myhome.cx/3850857851850859/The-Mail-Order-Bride-by-Diana-Bold.pdfIn PDF document text
    • http://solosopos.myhome.cx/3853857853853856/Mail-Order-Bride-by-Mark-Kalesniko.pdfIn PDF document text
    • http://solosopos.myhome.cx/5850850850859857/Willow-Bride-of-Pennsylvania-American-Mail-Order-Bride-2-by-Merry-Farmer.pdfIn PDF document text
    • http://solosopos.myhome.cx/9857858854850850/Emmy-Lou-Come-By-Chance-Mail-Order-Brides-6-by-Juliet-James.pdfIn PDF document text
    • http://solosopos.myhome.cx/2859852855859854/Mail-Order-Meddler-Brides-of-Beckham-10-by-Kirsten-Osbourne.pdfIn PDF document text
    • http://solosopos.myhome.cx/7853854857854/Emma-Mail-Order-Brides-Club-1-by-Ashley-Merrick.pdfIn PDF document text
    • http://solosopos.myhome.cx/1857857854858856/Mail-Order-Outlaw-Brides-of-Tombstone-1-by-Cynthia-Woolf.pdfIn PDF document text
    • http://solosopos.myhome.cx/1854858856858856/The-Airman-s-E-mail-Order-Bride-by-Cora-Seton.pdfIn PDF document text
    • http://solosopos.myhome.cx/1857858851852854/Robby-Riverton-Mail-Order-Bride-by-Eli-Easton.pdfIn PDF document text
    • http://solosopos.myhome.cx/5857857858858/Westward-Winds-Montana-Mail-Order-Brides-1-by-Linda-Bridey.pdfIn PDF document text
    • http://solosopos.myhome.cx/5850850850859854/Nobody-s-Mail-Order-Bride-Adeline-by-Crystal-Anne-Tilden.pdfIn PDF document text
    • http://solosopos.myhome.cx/1850859854855857855/The-Bear-s-Bride-Mail-Order-Mates-3-by-Lola-Kidd.pdfIn PDF document text
    • http://solosopos.myhome.cx/2857858851858857/RNWMP-Bride-for-Elijah-Mail-Order-Mounties-2-by-Kay-P-Dawson.pdfIn PDF document text
    • http://solosopos.myhome.cx/7855851853850851/Mail-Order-Widower-The-Belgrave-Brides-Agency-Book-1-by-Audrey-Yates.pdfIn PDF document text