Malicious PDF — malware analysis report

Static analysis result for SHA-256 b73047b0806967fd…

MALICIOUS

PDF

50.6 KB Created: 2021-03-29 05:54:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 4e2d022b2cfebf04b97a0384f7e2c9d7 SHA-1: 2a8ef52c6e7d152dcdd75141b802d41afb3214b8 SHA-256: b73047b0806967fda09a7db55223c28f5a34521173b365ea6723b6ece6f1f306
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7360

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 https://zajinet.ru/aws?utm_term=what+is+the+best+machine+learning+course+on+coursera PDF link annotation
    • http://xasujaru.22web.org/adobe_photoshop_elements_2018_for_pc.pdfIn PDF document text
    • https://cdn.sqhk.co/tejilunuf/jfjjgji/40283998593.pdfIn PDF document text
    • https://bowemubunewoseg.weebly.com/uploads/1/3/0/7/130739536/gafene_kenubixe_walaxumukirum_kasafolojabogu.pdfIn PDF document text
    • https://cdn.sqhk.co/pepupiribojo/itWnXqf/38103370402.pdfIn PDF document text
    • https://kojazuzok.weebly.com/uploads/1/3/1/4/131438397/5634813.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475383/normal_5fd758067b6bd.pdfIn PDF document text
    • https://cdn.sqhk.co/zudipoje/ficiOaj/17905280360.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446914/normal_602b56cef2ba0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468274/normal_601b7d2f91b91.pdfIn PDF document text
    • https://cdn.sqhk.co/sifalavuxozo/ieiiIjd/jivuze.pdfIn PDF document text
    • https://s3.amazonaws.com/bupaxomu/ejemplos_de_oraciones_con_verbos_irregulares_en_pasado_simple_en_ingles.pdfIn PDF document text
    • http://kekerojuxofex.epizy.com/new_bollywood_full_movies_2019_hd.pdfIn PDF document text
    • https://s3.amazonaws.com/rijaliwiguvex/19374295624.pdfIn PDF document text
    • https://s3.amazonaws.com/gosete/povefidi.pdfIn PDF document text
    • https://s3.amazonaws.com/jutenojamega/features_of_a_newspaper_article_ks2.pdfIn PDF document text
    • https://s3.amazonaws.com/vunizi/how_much_a_freelance_writer_earn_in_india.pdfIn PDF document text
    • https://s3.amazonaws.com/mejados/los_tipos_de_comunicacion_hay.pdfIn PDF document text

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