Malicious PDF — malware analysis report

Static analysis result for SHA-256 53babcf61e2ea1b9…

MALICIOUS

PDF

47.7 KB Created: 2021-09-26 20:24:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: cc3d229932fbc979bc9941b90dd6a7bd SHA-1: f211f9e061b08dcaf5fd35e481c3db13f1bb509f SHA-256: 53babcf61e2ea1b9d6e66b61b7b61c72132a5e390f135e8f2dec0ece5a0deb1d
132 Risk Score

Malware Insights

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

The PDF contains embedded JavaScript and numerous external URIs, many hosted on disposable domains, indicating a likely phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. The embedded JavaScript likely facilitates the redirection to these malicious sites, potentially to download further payloads or steal credentials.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6872

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
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://nomylo.ru/uplcv?utm_term=euro+truck+evolution+similar+games PDF link annotation
    • http://capmar.eu/userfiles/file/41071722986.pdfIn PDF document text
    • http://ros-audit.com/i/up/file/14097907637.pdfIn PDF document text
    • http://scamps.biz/userfiles/file/66980568609.pdfIn PDF document text
    • https://kingdomofgodmn.org/userfiles/files/kelegipaxedabujo.pdfIn PDF document text
    • https://australiancaravancentre.com.au/application/third_party/ckfinder/userfiles/files/91889250546.pdfIn PDF document text
    • http://maychaybocaocap.com/app/webroot/uploads/files/35598470957.pdfIn PDF document text
    • http://wsm.hk/images/uploadfiles/file/sonejejapumekute.pdfIn PDF document text
    • http://garage-fuji.jp/js/upload/files/15090925608.pdfIn PDF document text
    • https://eurotig.ro/file/xetujagapilojudukapixoko.pdfIn PDF document text
    • http://huarong-bio.com/upload/files/82423311154.pdfIn PDF document text
    • http://robertoantoniz.com/resources/original/file/4907596916.pdfIn PDF document text
    • https://lacaune.hu/userfiles/file/mafavodoxipegazajekezadi.pdfIn PDF document text
    • https://benqmusicworkshop.com/fupload/file/rafab.pdfIn PDF document text
    • http://www.sunarmisir.com.tr/wp-content/plugins/super-forms/uploads/php/files/0jvvpb5dpq8sbr5ecm7t71l1a3/xovatidipo.pdfIn PDF document text
    • http://tangiahoang.com/skinkorea/Images_upload/files/defukiwigakafutebuxeje.pdfIn PDF document text
    • http://kibunajcc.com/ckfinder/userfiles/files/kuzaronidijilatatefax.pdfIn PDF document text
    • http://mylivediamondinventory.com/uploads/files/fufazuvuvorogeji.pdfIn PDF document text
    • http://hockeydh.com/files/ups/files/rixokeporolomujiduruwiruj.pdfIn PDF document text
    • http://abpjse.news-read.com/upload/files/zosogurezusugolazirokoti.pdfIn PDF document text
    • http://futimisdev.com/userfiles/file/25524933383.pdfIn PDF document text
    • http://automsystem.com/UploadFile/file/20210907085855611.pdfIn PDF document text
    • http://kor-ra.ru/UserFiles/file/11736750478.pdfIn PDF document text
    • http://gonvvama.net/filespath/files/20210902120636.pdfIn PDF document text
    • https://dedywiredja.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613d3842afcee---32804364149.pdfIn PDF document text
    • https://speakingparrot.com/upload/ckfinder/files/93664766131.pdfIn PDF document text
    • https://idd.no/ckfinder/userfiles/files/47591699709.pdfIn PDF document text

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