Malicious PDF — malware analysis report

Static analysis result for SHA-256 4182a4ae2fe123ba…

MALICIOUS

PDF

48.0 KB Created: 2021-09-30 16:57:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: 21ffb583cca45fc6d0357d21e160f2a6 SHA-1: f518c9475f0461e6d9df05da09888a922c684991 SHA-256: 4182a4ae2fe123ba20c07eb16551c74770f83640f3505b59679ba05af016b138
144 Risk Score

Malware Insights

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

The sample was detected as a malicious PDF by ClamAV and an ML classifier. It contains numerous external URIs, including one pointing to a raw IP address, and is flagged as a link farm on disposable hosting. The PDF's structure and embedded links suggest it is intended to redirect users to malicious websites, likely for phishing or to download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6441

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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 https://crysiq.ru/uplcv?utm_term=script+mobile+legend+skin PDF link annotation
    • http://www.miamiairportlimo.net/wp-content/plugins/formcraft/file-upload/server/content/files/1614d4a8f6bbd4---tagubujok.pdfIn PDF document text
    • https://currenwatch.myhost360.cn/file/upload/files/09-08-14-49-36-43.pdfIn PDF document text
    • http://sterenstein.ru/userfiles/file/46582890610.pdfIn PDF document text
    • https://sanvexe.vn/webroot/img/files/dibevasupebaje.pdfIn PDF document text
    • http://hstechno.com/userData/ebizro_board/file/takipik.pdfIn PDF document text
    • http://anhuizhkj.com/upload_fck/file/2021-9-5/20210905222607488931.pdfIn PDF document text
    • http://ingatlantv.tv/userfiles/files/60193633604.pdfIn PDF document text
    • http://reversetheclocknow.com/ckfinder/userfiles/files/78160710209.pdfIn PDF document text
    • http://prinsart.ro/uploads/files/89198096025.pdfIn PDF document text
    • http://esteel.my/userfiles/file/giwezimixaxufikarefere.pdfIn PDF document text
    • https://santechnikosdarbai.lt/images/files/15300304145.pdfIn PDF document text
    • http://joyerialaplaza.com/ckfinder/userfiles/files/47485098668.pdfIn PDF document text
    • http://identik.hu/editor_up/padumuvipuwisu.pdfIn PDF document text
    • http://gartenstadt-apotheke.com/userfiles/file/lekuzeponofaselibitomidat.pdfIn PDF document text
    • http://satit.nrru.ac.th/satit/_Adminis/ckfinder/userfiles/files/22878771567.pdfIn PDF document text
    • https://pre-www.bridge-academy.com/uploaded/ckeditor/files/34266389079.pdfIn PDF document text
    • http://185.33.116.142/~bbyacht01/upload/files/mofapepubofa.pdfPDF link annotation
    • https://www.hungarianassociation.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613bfc02c23ac---ninenetedojabo.pdfIn PDF document text
    • https://hgb.se/filer/file/gumekupisaja.pdfIn PDF document text
    • http://xn--h1agcmh.com/ckfinder/userfiles/files/33259858352.pdfIn PDF document text
    • http://vector-food.com/userfiles/file/91196657543.pdfIn PDF document text
    • http://gulfcoastlist.com/userfiles/file/5447610796.pdfIn PDF document text
    • http://interel-rus.ru/test/sites/default/files/file/mixepopixapaxu.pdfIn PDF document text
    • http://autosoftware.company/autoresponders_images/files/38608079159.pdfIn PDF document text
    • https://nusantarabet4d2.com/contents/files/loxenabanezufofobadizamo.pdfIn PDF document text

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