Malicious PDF — malware analysis report

Static analysis result for SHA-256 4452d8121e232ca9…

MALICIOUS

PDF

18.0 KB Created: 2019-05-05 08:44:18 +01:00 Authoring application: mPDF 5.7 First seen: 2021-06-13
MD5: 44259702a5c80e6cddebb32e583279fb SHA-1: 0b1b38cd3ca73170bcfde0a9620d0f72c32346df SHA-256: 4452d8121e232ca9b830e8c2087aafaf550fdb55a74b962d29c9b5cf94c29104
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links to external PDF files, masquerading as children's books. This technique is often used to drive traffic to malicious sites or to host further malicious content. The ML classifier also flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9931

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/3737737733738734/Five-Go-To-Mystery-Moor-Book-13-by-Enid-Blyton.pdf In PDF document text
    • http://cefasfese.4pu.com/4737731730731/Five-Go-to-Mystery-Moor-Famous-Five-13-by-Enid-Blyton.pdfIn PDF document text
    • http://cefasfese.4pu.com/9737738734733736/The-Enid-Blyton-Book-Of-Brownies-by-Enid-Blyton.pdfIn PDF document text
    • http://cefasfese.4pu.com/2734733732735730/The-Enid-Blyton-Book-of-Fairies-by-Enid-Blyton.pdfIn PDF document text
    • http://cefasfese.4pu.com/2734734737730734/Snicker-The-Brownie-And-Other-Stories-Enid-Blyton-s-Popular-Rewards-Series-I-by-Enid-Blyton.pdfIn PDF document text
    • http://cefasfese.4pu.com/1738730737736730/The-Sneezing-Dog-And-Other-Stories-Enid-Blyton-s-Popular-Rewards-Series-Iv-by-Enid-Blyton.pdfIn PDF document text
    • http://cefasfese.4pu.com/3735737734730738/Enid-Blyton-s-Malory-Towers-6-Books-Collection-by-Enid-Blyton.pdfIn PDF document text
    • http://cefasfese.4pu.com/2737734737738735/The-Naughtiest-Girl-Collection-Enid-Blyton-by-Enid-Blyton.pdfIn PDF document text
    • http://cefasfese.4pu.com/8737734735739/Five-Have-a-Mystery-to-Solve-Famous-Five-20-by-Enid-Blyton.pdfIn PDF document text
    • http://cefasfese.4pu.com/3737733731734731/The-Mystery-of-the-Pantomime-Cat-The-Five-Find-Outers-7-by-Enid-Blyton.pdfIn PDF document text
    • http://cefasfese.4pu.com/1738730739737739/The-Mystery-of-the-Burnt-Cottage-The-Five-Find-Outers-1-by-Enid-Blyton.pdfIn PDF document text
    • http://cefasfese.4pu.com/6738736731731/The-Mystery-of-the-Vanished-Prince-The-Five-Find-Outers-9-by-Enid-Blyton.pdfIn PDF document text
    • http://cefasfese.4pu.com/3737733733734735/The-Mystery-of-Holly-Lane-The-Five-Find-Outers-11-by-Enid-Blyton.pdfIn PDF document text
    • http://cefasfese.4pu.com/6733738734737/The-Mystery-of-the-Strange-Messages-The-Five-Find-Outers-14-by-Enid-Blyton.pdfIn PDF document text
    • http://cefasfese.4pu.com/9737738737730735/The-Mystery-of-Banshee-Towers-The-Five-Find-Outers-15-by-Enid-Blyton.pdfIn PDF document text
    • http://cefasfese.4pu.com/6731738731731/The-Mystery-of-the-Invisible-Thief-The-Five-Find-Outers-8-by-Enid-Blyton.pdfIn PDF document text
    • http://cefasfese.4pu.com/2733734736738732/The-Rilloby-Fair-Mystery-Barney-Mysteries-2-by-Enid-Blyton.pdfIn PDF document text
    • http://cefasfese.4pu.com/3736735732737737/An-Enid-Blyton-Collection-The-Enchanted-Wood-The-Magic-Faraway-Tree-And-The-Folk-Of-The-Faraway-Tree-by-Enid-Blyton.pdfIn PDF document text
    • http://cefasfese.4pu.com/9737738736735739/Looking-For-Enid-The-Mysterious-And-Inventive-Life-Of-Enid-Blyton-by-Duncan-McLaren.pdfIn PDF document text
    • http://cefasfese.4pu.com/2734734733739733/Secret-Seven-Mystery-The-Secret-Seven-9-by-Enid-Blyton.pdfIn PDF document text

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