Malicious PDF — malware analysis report

Static analysis result for SHA-256 8409b6f117ef172f…

MALICIOUS

PDF

17.8 KB Created: 2019-06-04 21:21:24 +01:00 Authoring application: mPDF 5.7
MD5: d69628baaf0a2203e55efa4bcfe50154 SHA-1: 8ba29800c5920064dd615d54e286fbb80bd704f3 SHA-256: 8409b6f117ef172fb00d8b8bc314aa6f16266c196289c9b48a3caaa79dc7df12
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm or distribution mechanism. The ML classifier also flagged this PDF as malicious with high confidence. While the URLs themselves are currently marked as benign, the sheer volume and the heuristic firing indicate a malicious intent, likely to redirect users to malicious sites or to manipulate search engine results.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9925

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/1737731732739739/All-That-She-Wants-The-Billionaire-s-Point-of-View-The-Billionaire-s-Seduction-1-5-by-Olivia-Thorne.pdf
    • http://cefasfese.4pu.com/2738731739732731/The-Billionaire-s-Passion-The-Billionaire-s-Kiss-Book-Four-A-Billionaire-Alpha-Romance-by-Olivia-Thorne.pdf
    • http://cefasfese.4pu.com/5737732730732/All-That-He-Wants-The-Billionaire-s-Seduction-1-by-Olivia-Thorne.pdf
    • http://cefasfese.4pu.com/3733732731735738/All-That-He-Wants-Volume-1-The-Billionaire-s-Seduction-1-4-by-Olivia-Thorne.pdf
    • http://cefasfese.4pu.com/2738731739731737/The-Billionaire-s-Caress-by-Olivia-Thorne.pdf
    • http://cefasfese.4pu.com/2738731739735736/The-Billionaire-s-Touch-by-Olivia-Thorne.pdf
    • http://cefasfese.4pu.com/4739730738732731/Pregnant-by-the-Sheikh-The-Billionaire-s-of-Blackcastle-3-by-Olivia-Gates.pdf
    • http://cefasfese.4pu.com/3732735739739731/The-Billionaire-and-The-Virgin-Seduction-and-Sin-1-by-Bella-Love-Wins.pdf
    • http://cefasfese.4pu.com/7734731738738734/Scandal-And-Surrender-The-Billionaire-s-Seduction-3-by-Cali-MacKay.pdf
    • http://cefasfese.4pu.com/4737739734734732/Taken-By-The-Greek-Billionaire-Criminal-Seduction-1-by-Emma-Shortt.pdf
    • http://cefasfese.4pu.com/7734731738732739/Obsession-and-Surrender-The-Billionaire-s-Seduction-2-by-Cali-MacKay.pdf
    • http://cefasfese.4pu.com/4734733735730732/The-Billionaire-s-Desire-A-Single-Dad-Romance-The-Billionaire-s-Touch-Book-4-by-L-N-Pearl.pdf
    • http://cefasfese.4pu.com/3739732739736/Beauty-and-the-Billionaire-Billionaire-Boys-Club-2-by-Jessica-Clare.pdf
    • http://cefasfese.4pu.com/3737736735737/Stranded-with-a-Billionaire-Billionaire-Boys-Club-1-by-Jessica-Clare.pdf
    • http://cefasfese.4pu.com/2737733739730738/The-Reclusive-Billionaire-Destination-Billionaire-Romance-1-by-Lucy-McConnell.pdf
    • http://cefasfese.4pu.com/1734734734739739/The-Billionaire-s-Marriage-Proposal-Billionaire-Bachelors-4-by-Melody-Anne.pdf
    • http://cefasfese.4pu.com/2739737736738738/The-Billionaire-s-Final-Stand-Billionaire-Bachelors-7-by-Melody-Anne.pdf
    • http://cefasfese.4pu.com/3738737733738738/Billionaire-Bound-My-Billionaire-Boss-1-by-Emily-Cantore.pdf
    • http://cefasfese.4pu.com/1731737738739738736/The-Billionaire-s-Dance-Billionaire-Bachelors-2-by-Melody-Anne.pdf
    • http://cefasfese.4pu.com/1734736730733733/Billionaire-Obsession-Billionaire-Boys-Club-by-J-L-Ryan.pdf
    • http://cefasfese.4pu.com/7734731738738734