Malicious PDF — malware analysis report

Static analysis result for SHA-256 43b976ea21fb941a…

MALICIOUS

PDF

18.2 KB Created: 2019-06-09 11:48:42 +01:00 Authoring application: mPDF 5.7
MD5: 3b850d7ca030e792a85c5e69bee9d37d SHA-1: 76891c030c33e51f68617a6f283d84c381540e58 SHA-256: 43b976ea21fb941a8e80d3d27aa49827caed2553975b93ae955c13617abf40cf
60 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment

The PDF file contains a large number of embedded URLs, identified by the PDF_SEO_LINK_FARM heuristic. These URLs point to various book titles, but the sheer volume and the domain structure suggest a link farm for SEO manipulation or to distribute further malicious content. No scripts were extracted from this sample. The primary attack pattern is the distribution of numerous external links within the document.

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://cefasfese.4pu.com/1730730733731730733/The-Canterbury-Tales-De-Morgen-Bibliotheek-Boeken-van-Liefde-en-Lust-20-by-Geoffrey-Chaucer.pdf
    • http://cefasfese.4pu.com/9738735732736734/The-Canterbury-Tales---Original-and-Modernised-Text-by-Geoffrey-Chaucer---Delphi-Classics-Illustrated-Delphi-Parts-Edition-Geoffrey-Chaucer-by-Geoffrey-Chaucer.pdf
    • http://cefasfese.4pu.com/4735739731738734/Works-of-Geoffrey-Chaucer-The-Canterbury-Tales-Troilus-and-Criseyde-by-Geoffrey-Chaucer.pdf
    • http://cefasfese.4pu.com/3730730734735735/The-Squire-s-Tale-Chaucer-s-Canterbury-Tales-1921-by-Geoffrey-Chaucer.pdf
    • http://cefasfese.4pu.com/6734737730734730/The-Canterbury-Tales-of-Chaucer-To-Which-Are-Added-an-Essay-Upon-His-Language-and-Versification-an-Introductory-Discourse-and-Notes-by-Geoffrey-Chaucer.pdf
    • http://cefasfese.4pu.com/1730731739736730736/The-Canterbury-Tales-by-Geoffrey-Chaucer.pdf
    • http://cefasfese.4pu.com/1730732732731732739/The-Canterbury-Tales-by-Geoffrey-Chaucer.pdf
    • http://cefasfese.4pu.com/4730737735735739/The-Canterbury-Tales-by-Geoffrey-Chaucer.pdf
    • http://cefasfese.4pu.com/9738730730730738/The-Canterbury-Tales-by-Geoffrey-Chaucer.pdf
    • http://cefasfese.4pu.com/7739736739738736/The-Canterbury-Tales-by-Geoffrey-Chaucer.pdf
    • http://cefasfese.4pu.com/9732733739739739/The-Canterbury-Tales-by-Geoffrey-Chaucer.pdf
    • http://cefasfese.4pu.com/5732734734738730/Canterbury-Tales-by-Geoffrey-Chaucer.pdf
    • http://cefasfese.4pu.com/6733733734739736/The-Canterbury-Tales-by-Geoffrey-Chaucer.pdf
    • http://cefasfese.4pu.com/9732739736734732/The-Canterbury-Tales-by-Geoffrey-Chaucer.pdf
    • http://cefasfese.4pu.com/4731736734733735/The-Canterbury-Tales-The-First-Fragment-by-Geoffrey-Chaucer.pdf
    • http://cefasfese.4pu.com/1739730739730730/The-Wife-of-Bath-and-Other-Canterbury-Tales-by-Geoffrey-Chaucer.pdf
    • http://cefasfese.4pu.com/6733735735733731/The-Canterbury-Tales-in-Modern-Verse-by-Geoffrey-Chaucer.pdf
    • http://cefasfese.4pu.com/9731731735734733/The-Canterbury-Tales-100-Greatest-Books-of-All-Time-by-Geoffrey-Chaucer.pdf
    • http://cefasfese.4pu.com/1731735734735730734/The-Canterbury-Tales-With-Linked-Table-of-Contents-by-Geoffrey-Chaucer.pdf
    • http://cefasfese.4pu.com/5735731731732734/The-Canterbury-Tales-Longman-Classics-Stage-2-by-Geoffrey-Chaucer.pdf
    • http://cefasfese.4pu.com/6734737730734730/The-Canterbury-Tales-of-Chaucer-To-Which-Are-Added-an-Essay-Upon-His-Language-a

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