Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c90cf1c80b54896…

MALICIOUS

PDF

69.2 KB Created: 2021-09-13 22:21:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: c482e138a664a3919f72b1582ac395ec SHA-1: b2f7865c74c8c889311cc4780a036706829d3d14 SHA-256: 9c90cf1c80b54896e865fdd3ed6b9389f0e0b4e515cb7241be1d5f4a74950b7e
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF file was flagged by ClamAV as a phishing trojan and a machine learning classifier also indicated maliciousness. The document contains numerous embedded URLs, many of which point to other PDF files on disposable hosting, suggesting a link farm designed to distribute malware. The primary attack pattern involves luring users to download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6374

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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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 http://satyavnetworks.com/fck_upload_images/file/kezigu.pdf In PDF document text
    • http://gyogytornasz.hu/editor_up/bopokodarokexaketeka.pdfIn PDF document text
    • https://emartdeko.pl/galeria/file/22550753481.pdfIn PDF document text
    • https://smarttactic.ro/wp-content/plugins/formcraft/file-upload/server/content/files/161351bf144173---89154082928.pdfIn PDF document text
    • https://fundacionamigosdelmarcaribe.ong/ckfinder/userfiles/files/7085916643.pdfIn PDF document text
    • https://kultmotor.hu/images/files/9000878245.pdfIn PDF document text
    • http://naim.naparts.com/images/fck/file/59735771346.pdfIn PDF document text
    • http://africareview.in/userfiles/file/zipotubo.pdfIn PDF document text
    • http://rujiahk.com/uploadfiles/file/97021985490.pdfIn PDF document text
    • https://bcbc3399.com/upload/files/remodomekemelukap.pdfIn PDF document text
    • http://dgjinhak.kr/DATA/upload/files/202109090311257632.pdfIn PDF document text
    • http://kraljicabih.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613db25f7d832---dovatowalakupobujo.pdfIn PDF document text
    • http://orenprom.com/img/account/file/70702669564.pdfIn PDF document text
    • http://kimhoatra.vn/upload/fckimagesfile/39338867946.pdfIn PDF document text
    • https://perfecthospital.org/ckfinder/userfiles/files/6239590554.pdfIn PDF document text
    • http://nawoo.net/userData/board/file/44520455807.pdfIn PDF document text
    • https://kawanmto.com/contents/files/86662601834.pdfIn PDF document text
    • http://www.jobibon.com/admin/userfiles/file/notapulovobabosebiw.pdfIn PDF document text
    • http://eapver.com/upload/ckimg/files/202109100733171182.pdfIn PDF document text
    • http://uat2.hkha.com.hk/ckfinder/userfiles/files/91251558561.pdfIn PDF document text
    • http://yakutiaprime.ru/SITE/files/editor/file/81703829980.pdfIn PDF document text
    • https://hse.tw/upload/file/68777843281.pdfIn PDF document text
    • http://vntattoosupply.net/uploads/image/files/tixofineleparosiwu.pdfIn PDF document text
    • http://www.village-gaulois.org/gestion/ckfinder/userfiles/files/13096685515.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/A3Ryygt5BCM/uplcv?utm_term=isaimini+2021+tamil+movies+downloadPDF link annotation

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