Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff845e150680a837…

MALICIOUS

PDF

47.7 KB Created: 2021-09-07 11:01:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 2cda6a1799def35da67c1c91c0b97f69 SHA-1: 75ff74ad9bc9618929163f7c12a077de274a088c SHA-256: ff845e150680a837bc3c61b29393de8f747147eda52d77e8931a0da2484d8988
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs that point to various domains, many of which appear to be compromised or disposable hosting. The ClamAV detection and ML classifier strongly indicate malicious intent, likely for phishing or distributing further malware. Although no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with a link farm used to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5712

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
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://catamma.ru/uplcv?utm_term=topsis+y%C3%B6ntemi+pdf PDF link annotation
    • http://luxe-pools.fr/i/File/ratirojuzubajinogazola.pdfIn PDF document text
    • http://copy2d.com/ftp/image/file/kepis.pdfIn PDF document text
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/160783aaecf561---putaniresudipanevokosij.pdfIn PDF document text
    • https://music-group-store.com/upload/files/27047198337.pdfIn PDF document text
    • http://heureka-cz.eu/files/31936896069.pdfIn PDF document text
    • http://www.commandinglife.com/wp-content/plugins/formcraft/file-upload/server/content/files/160972399cbac5---bezilepapajenevadi.pdfIn PDF document text
    • http://alumcity.ru/userfiles/file/novuwijixebabifu.pdfIn PDF document text
    • http://amphorabeautyclub.com/campannas/file/70630570370.pdfIn PDF document text
    • http://lpkgoodframeupvc.com/userfiles/files/15481767573.pdfIn PDF document text
    • http://moscowfashion.net/content/xuploadimages/file/30317896432.pdfIn PDF document text
    • http://soechi.net/userfiles/file/bugesotit.pdfIn PDF document text
    • https://dermo.com/wp-content/plugins/formcraft/file-upload/server/content/files/16076cbf8cd084---xifigifalanarejenigaf.pdfIn PDF document text
    • http://www.realisthotel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ab7ae3bb4c7---fumifawofedazofoxozaw.pdfIn PDF document text
    • http://friluftsgruppen.se/wp-content/plugins/formcraft/file-upload/server/content/files/160abb2ad5f1e6---70446035696.pdfIn PDF document text
    • http://alarmy-kamery24.pl/userfiles/file/59105488600.pdfIn PDF document text
    • http://automsystem.com/UploadFile/file/20210817163641330.pdfIn PDF document text
    • https://www.spoton.pet/wp-content/plugins/super-forms/uploads/php/files/jkele0bpchjv6f58l7ieve53a3/vumidi.pdfIn PDF document text
    • https://www.dazzlingdecor.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160dd92aff24e4---7198804212.pdfIn PDF document text
    • https://eduinfinite.com/wp-content/plugins/super-forms/uploads/php/files/423751f90f13f4bebe9f054d68d3372f/visemamewadojonoxuxu.pdfIn PDF document text
    • https://genegurumiraclehealer.com/userfiles/file/77688911267.pdfIn PDF document text
    • http://janjoling.com/public/ckfinder/userfiles/files/30016226939.pdfIn PDF document text
    • http://enslev-anlaegsservice.dk/userfiles/file/vuvomasesewesa.pdfIn PDF document text
    • http://creativetechno.in/userfiles/file/batemeseravulebun.pdfIn PDF document text
    • http://lyzph.com/userfiles/file/Fl202107210905177936.pdfIn PDF document text
    • https://xn--78-6kce7dfhb9dwb.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/594122bb320f4586508961b5d1a61325/82367621670.pdfIn PDF document text
    • http://lifemartrealestateconnect.com/wp-content/plugins/super-forms/uploads/php/files/p3c4mvq067nlfisvbesq2qcg33/wuvelilufojerinedigifozeb.pdfIn PDF document text
    • https://cleanenergy.mn/uploads/files/gisureruxaragodalemobavu.pdfIn PDF document text
    • http://f-kcc.jp/user_data/userfiles/files/zusuvajusano.pdfIn PDF document text