Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba2d25bb46ce2b28…

MALICIOUS

PDF

19.2 KB Created: 2019-05-02 06:14:48 +01:00 Authoring application: mPDF 5.7 First seen: 2021-06-20
MD5: 96a3aacfc04bbce3252d553f4ff21d07 SHA-1: 37448453e5e96b30e46da478d358d589b512aeff SHA-256: ba2d25bb46ce2b28eff0e5351869480b6743dff799b3130e067e2346e49c8972
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of embedded URLs, identified by the 'PDF_SEO_LINK_FARM' heuristic. While many of these URLs are marked as benign, the sheer volume and the nature of the heuristic suggest a malicious intent, possibly for SEO manipulation or to redirect users to malicious content. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the presence of embedded URLs within a PDF is often used for initial access via spearphishing attachments.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9920

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/3736730734734731/The-Empire-of-the-Wolves-by-Jean-Christophe-Grang-.pdf In PDF document text
    • http://cefasfese.4pu.com/1734732736736733/03-by-Jean-Christophe-Valtat.pdfIn PDF document text
    • http://cefasfese.4pu.com/5733736737735732/The-World-According-to-Karl-by-Jean-Christophe-Napias.pdfIn PDF document text
    • http://cefasfese.4pu.com/5733736735734738/Jean-Christophe-Journey-s-End-by-Romain-Rolland.pdfIn PDF document text
    • http://cefasfese.4pu.com/7734731736732736/Enfants-de-dictateurs-by-Jean-Christophe-Brisard.pdfIn PDF document text
    • http://cefasfese.4pu.com/6738736732731737/Le-D-paysement-Voyages-en-France-1-by-Jean-Christophe-Bailly.pdfIn PDF document text
    • http://cefasfese.4pu.com/5733736736730730/The-Making-of-Life-of-Pi-A-Film-a-Journey-by-Jean-Christophe-Castelli.pdfIn PDF document text
    • http://cefasfese.4pu.com/1730737736730732735/ARCHE---Les-mythes-racontent-une-histoire-vraie-by-Jean-Christophe-Issartier.pdfIn PDF document text
    • http://cefasfese.4pu.com/6731738738733737/The-Santiago-Pilgrimage-Walking-the-Immortal-Way-by-Malcolm-Imrie-translator-Martina-Dervis-translator-Jean-Christophe-Rufin-author-.pdfIn PDF document text
    • http://cefasfese.4pu.com/2733730738730737/The-Complete-Empire-Trilogy-Daughter-of-the-Empire-Mistress-of-the-Empire-Servant-of-the-Empire-The-Empire-Trilogy-1-3-by-Raymond-E-Feist.pdfIn PDF document text
    • http://cefasfese.4pu.com/8736732736732732/Julie-of-the-Wolves-PB-by-Jean-Craighead-George.pdfIn PDF document text
    • http://cefasfese.4pu.com/2739738737732/Wolves-in-Blue-Stories-of-the-North-Brothers-and-Their-Pawnee-Scouts-by-Jean-A-Lukesh.pdfIn PDF document text
    • http://cefasfese.4pu.com/6732737731739737/Romain-Rolland-Oeuvres-Majeures-L-dition-int-grale-Jean-Christophe-Au-dessus-de-la-m-l-e-Vie-de-Tolsto-Vie-de-Beethoven-Colas-Breugnon--L-me-enchant-by-Romain-Rolland.pdfIn PDF document text
    • http://cefasfese.4pu.com/4739737737737733/The-Glory-of-the-Empire-A-Novel-a-History-by-Jean-d-39-Ormesson.pdfIn PDF document text
    • http://cefasfese.4pu.com/2733736734738736/The-Wolves-of-Willoughby-Chase-The-Wolves-Chronicles-1-by-Joan-Aiken.pdfIn PDF document text
    • http://cefasfese.4pu.com/4736732731739739/The-Wolves-of-Willoughby-Chase-The-Wolves-Chronicles-1-by-Joan-Aiken.pdfIn PDF document text
    • http://cefasfese.4pu.com/4738730735738738/A-Cougar-Among-Wolves-Black-Hills-Wolves-45-by-Kali-Willows.pdfIn PDF document text
    • http://cefasfese.4pu.com/2737737737739736/Dances-with-Wolves-Highland-Wolves-1-by-Mandy-Monroe.pdfIn PDF document text
    • http://cefasfese.4pu.com/3734734738737734/Among-Wolves-Wolves-of-Llis-1-by-Nancy-K-Wallace.pdfIn PDF document text
    • http://cefasfese.4pu.com/4732732739738737/Sanctification-Empire-saga-6-Space-Empire-Trilogy-3-by-Michael-J-Findley.pdfIn PDF document text

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