Malicious PDF — malware analysis report

Static analysis result for SHA-256 5cbdbb6660617f8c…

MALICIOUS

PDF

16.1 KB Created: 2019-12-12 13:02:04 +00:00 Authoring application: mPDF 5.7
MD5: 2469f02e9150f1de17cd5dde5e62274e SHA-1: bb4945ae27a8fcfa72f81d9222307b1c93cadd47 SHA-256: 5cbdbb6660617f8cd674f705a4a3bfbf52ccd2ec88c2fa4c92c08d0aa5df9eda
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs, forming a link farm. This heuristic suggests the document is designed to direct users to numerous external sites, likely for SEO manipulation or to host malicious content. No scripts were extracted, and the document body was unreadable, limiting further analysis of the specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9811

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/1731733736731737736/Piranesi-s-Dream-by-Gerhard-Kopf.pdf
    • http://cefasfese.4pu.com/1730739736731731730/Kopf-oder-Bauch-Zur-Biologie-der-Entscheidung-by-Gerhard-Roth.pdf
    • http://cefasfese.4pu.com/1731733736732735735/Kopf-an-Kopf-zwischen-den-Jungs-by-Lora-Stein.pdf
    • http://cefasfese.4pu.com/1731733736731731731/Kopf-an-Kopf-by-Tobias-Wahren.pdf
    • http://cefasfese.4pu.com/1734735734732735/Daring-to-Dream-Holding-the-Dream-Finding-the-Dream-Dream-trilogy-1-3-by-Nora-Roberts.pdf
    • http://cefasfese.4pu.com/8736739731735738/Piranesi-by-Pierre-Seghers.pdf
    • http://cefasfese.4pu.com/8732737730738732/Antiquit-s-d-Herculanum-Tome-I-by-Francesco-Piranesi.pdf
    • http://cefasfese.4pu.com/8736737739735731/Gerhard-Richter-Panorama-by-Gerhard-Richter.pdf
    • http://cefasfese.4pu.com/5734731735734731/Kopf-in-der-Schlinge-N-wie-Niedertracht-by-Sue-Grafton.pdf
    • http://cefasfese.4pu.com/9739731731734738/Welten-in-meinem-Kopf-by-Mia-Lenze.pdf
    • http://cefasfese.4pu.com/4738730736731738/Good-Dream-Bad-Dream-The-World-s-Heroes-Save-the-Night-by-Juan-Calle.pdf
    • http://cefasfese.4pu.com/8734732737739735/A-Dictionary-Of-Dream-Symbols-With-An-Introduction-To-Dream-Psychology-by-Eric-Ackroyd.pdf
    • http://cefasfese.4pu.com/4739730737736739/Dream-a-Little-Scream-Dream-Club-Mystery-2-by-Mary-Kennedy.pdf
    • http://cefasfese.4pu.com/2732732734735739/Dream-a-Little-Dream-Chicago-Stars-4-by-Susan-Elizabeth-Phillips.pdf
    • http://cefasfese.4pu.com/3738739736732734/A-Wish-a-Kiss-a-Dream-Cowboys-and-Captives-2-Dream-4-by-Shiloh-Walker.pdf
    • http://cefasfese.4pu.com/1730732732737739733/Hawaii-beginnt-im-Kopf-by-Steffen-Engelmann.pdf
    • http://cefasfese.4pu.com/1730732732737733739/Siegen-beginnt-im-Kopf-by-Antje-Heimsoeth.pdf
    • http://cefasfese.4pu.com/8737733736736733/Der-Feind-In-Deinem-Kopf-by-Jack-Allanach.pdf
    • http://cefasfese.4pu.com/1732736734730/Finding-the-Dream-Dream-Trilogy-3-by-Nora-Roberts.pdf
    • http://cefasfese.4pu.com/1731735738737737737/Heimlich-Fee-4-Wie-ein-Zauber-alles-auf-den-Kopf-stellte-by-Thilo.pdf