Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b498e81b1d100b4…

MALICIOUS

PDF

16.8 KB Created: 2019-05-02 05:10:03 +01:00 Authoring application: mPDF 5.7
MD5: 1e09968761eb6673181902bbc092c9d2 SHA-1: 65630fa0362c30858c3311c242b0cdb6dd58f10d SHA-256: 8b498e81b1d100b452f74b30a286db51957503bf1ed5ffae06bc8e011a438b84
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links pointing to a single domain, 'cefasfese.4pu.com', which is indicative of a link farm or a redirection scheme. The ML classifier also flagged this PDF as malicious. The embedded URLs are likely used to direct users to potentially malicious content or phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9787

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/4739739736734735/A-Sentimental-Journey-Romance-Collection-9-Love-Stories-from-the-Memorable-1940s-by-Cathy-Marie-Hake.pdf
    • http://cefasfese.4pu.com/8734739730732/Forevermore-Only-in-Gooding-2-by-Cathy-Marie-Hake.pdf
    • http://cefasfese.4pu.com/2733734739736732/Serendipity-Only-in-Gooding-5-by-Cathy-Marie-Hake.pdf
    • http://cefasfese.4pu.com/2733734739733733/Whirlwind-Only-in-Gooding-3-by-Cathy-Marie-Hake.pdf
    • http://cefasfese.4pu.com/1735731734733736/Fancy-Pants-Only-in-Gooding-1-by-Cathy-Marie-Hake.pdf
    • http://cefasfese.4pu.com/8734732732735/Letter-Perfect-California-Historical-1-by-Cathy-Marie-Hake.pdf
    • http://cefasfese.4pu.com/3730733736735739/The-Bartered-Bride-The-Bride-Trilogy-3-by-Mary-Jo-Putney.pdf
    • http://cefasfese.4pu.com/3732739734730734/The-Bartered-Bride-by-Anne-Weale.pdf
    • http://cefasfese.4pu.com/4735730738732738/The-Bartered-Bride-The-Brides-3-by-Lena-Goldfinch.pdf
    • http://cefasfese.4pu.com/2730732739735735/Pure-Princess-Bartered-Bride-by-Caitlin-Crews.pdf
    • http://cefasfese.4pu.com/2731738731735735/The-Bride-Backfire-Prairie-Promises-2-by-Kelly-Eileen-Hake.pdf
    • http://cefasfese.4pu.com/4730739733732735/The-Child-Bride-by-Cathy-Glass.pdf
    • http://cefasfese.4pu.com/2731736732739734/Bride-Quartet-Collection-Savour-The-Moment-A-Bed-Of-Roses-Vision-In-White-Bride-Quartet-1-4-by-Nora-Roberts.pdf
    • http://cefasfese.4pu.com/3739734738730737/The-Painted-Girls-by-Cathy-Marie-Buchanan.pdf
    • http://cefasfese.4pu.com/4732733735737731/The-Painted-Girls-by-Cathy-Marie-Buchanan.pdf
    • http://cefasfese.4pu.com/6731736733735730/Bois-de-Boulogne-A-Short-Story-by-Cathy-Marie-Buchanan.pdf
    • http://cefasfese.4pu.com/2737736734739733/Flurries-A-Zapstone-New-Voices-Holiday-Collection-by-Cathy-Wiley.pdf
    • http://cefasfese.4pu.com/7731732739738736/Castillo-s-Bride-by-Anne-Marie-Duquette.pdf
    • http://cefasfese.4pu.com/4733735731737730/The-Billionaire-s-Runaway-Bride-by-Marie-Kelly.pdf
    • http://cefasfese.4pu.com/6732735736731730/Rewriting-Rewriting-Marguerite-Duras-Annie-Ernaux-and-Marie-Redonnet-by-Cathy-Jellenik.pdf