Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a534e15e55db466…

MALICIOUS

PDF

18.4 KB Created: 2019-05-01 06:43:38 +01:00 Authoring application: mPDF 5.7
MD5: d67acb4c2de5eba74fe3761b5b2685ac SHA-1: 54e2f0850660ab5669c0c31e1962903cfddf7f21 SHA-256: 4a534e15e55db466c4e05794e63dad5adffb402a8eb949877e91bdc31ddfc13e
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file was flagged by a machine learning classifier as malicious. It contains a large number of embedded links, identified as a 'PDF_SEO_LINK_FARM' heuristic, which likely serves to redirect users to potentially harmful content or to manipulate search engine results. The document body is heavily obfuscated and unreadable, providing no direct clues to its intent beyond the embedded links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9775

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/1731733730732733730/Der-Schl-ssel-zum-Erfolg-LR---Aus-der-Praxis-f-r-die-Praxis-by-Berthold-G-ntner.pdf
    • http://cefasfese.4pu.com/3738737732739736/Worldship-Praxis-by-J-D-Lovil.pdf
    • http://cefasfese.4pu.com/1731738736731733731/Culture-as-Praxis-by-Zygmunt-Bauman.pdf
    • http://cefasfese.4pu.com/1731732734733731739/Wissensmanagement-in-Der-Praxis-by-Markus-Reineke.pdf
    • http://cefasfese.4pu.com/6730732736736732/Chess-Praxis-by-Aron-Nimzowitsch.pdf
    • http://cefasfese.4pu.com/7735737739735730/CBASP-in-der-Praxis-by-Martina-Belz.pdf
    • http://cefasfese.4pu.com/1731738736731732739/DeadBlood-Praxis-2-by-Carolyn-McCray.pdf
    • http://cefasfese.4pu.com/8739735736733737/Duden-Praxis---Rechtschreibung-und-Grammatik-by-Dudenredaktion.pdf
    • http://cefasfese.4pu.com/1731732734732736739/IT-Wissensmanagement---Theorie-und-Praxis-by-Veikko-Krypczyk.pdf
    • http://cefasfese.4pu.com/9733736737734735/Magick-in-Theorie-und-Praxis-by-Aleister-Crowley.pdf
    • http://cefasfese.4pu.com/1730737736731733733/Handbuch-Ausstellungstheorie-und--praxis-by-ARGE-schnittpunkt.pdf
    • http://cefasfese.4pu.com/9733739738739734/Lightroom-5-Praxis-Das-Handbuch-f-r-Fotografen-by-Marc-Altmann.pdf
    • http://cefasfese.4pu.com/6739732737732734/Hybride-Wettbewerbsstrategien-in-Theorie-Und-Praxis-by-Philipp-Nyssen.pdf
    • http://cefasfese.4pu.com/1731739734737731732/Rheumatologie-Fuer-Die-Praxis-by-Hans-J-rgen-Albrecht.pdf
    • http://cefasfese.4pu.com/1730732737730738733/Das-selbstdisziplinierende-Klassenzimmer-Win-Win-Strategien-aus-der-Praxis-by-Pearl-Nitsche.pdf
    • http://cefasfese.4pu.com/9735733733738738/Die-Eignung-Von-Dialoginseln-Fur-Die-Umsetzung-Des-Wissensmanagements-in-Der-Praxis-by-Arne-Heiland.pdf
    • http://cefasfese.4pu.com/6737736731738730/Fallbuch-IDS-Die-Intelligence-and-Development-Scales-in-der-Praxis-by-Priska-Hagmann-von-Arx.pdf
    • http://cefasfese.4pu.com/7738734739739735/Physiotherapie-bei-chronischen-Atemwegs--und-Lungenerkrankungen-Evidenzbasierte-Praxis-by-A-J-R-van-Gestel.pdf
    • http://cefasfese.4pu.com/9736737733738737/Der-therapeutische-Flohmarkt-Fragen-und-Antworten-aus-der-Praxis-by-Beate-Kuby.pdf
    • http://cefasfese.4pu.com/9738730739736739/Traumberuf-T-nzer-Ausbildung-Einstieg-Praxis-by-Wibke-Hartewig.pdf
    • http://cefasfese.4pu.com/9733739738739734/Li

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