Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c8274e8e3aba92b…

MALICIOUS

PDF

72.7 KB Created: 2021-08-24 06:58:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: bb8cc106ba23adb1944ecceccfcfa437 SHA-1: ab6e1ad58edc77c5144e28a2072ebdc8a698fa20 SHA-256: 9c8274e8e3aba92bb391de2a4ff822581fe34183f0891498fc03d77064accc0b
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of links, many of which point to compromised WordPress upload directories or disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. The primary function appears to be acting as a link farm to direct users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9329

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 http://srhs1980.com/clients/877094/File/74682168400.pdf
    • http://smart-ventures.ch/upload/Editor_Images/files/2708241493.pdf
    • http://www.cenlafilm.com/siteuploads/editorimg/file/bimimax.pdf
    • https://www.ogblfrontaliers.fr/wp-content/plugins/super-forms/uploads/php/files/phqja7ecl7r05fg52kjcoiqpoh/rajitaposajob.pdf
    • https://earplighting.com/wp-content/plugins/super-forms/uploads/php/files/ae1b5d22114c582923b5c4fde0c8acfd/68453700888.pdf
    • http://stalmont.eu/userfiles/file/94004113722.pdf
    • https://elitteaccesorios.com/wp-content/plugins/super-forms/uploads/php/files/47am4dingc46mlulcvhkmi2op8/61321246420.pdf
    • http://vorne-sitzen.eu/pcms/content/file/31174984581.pdf
    • http://pandoreunion.com/clients/81456/File/61319505012.pdf
    • http://opuspoint.com/ckfinder/userfiles/files/razodedozenafi.pdf
    • http://akkoryazilim.com/userfiles/file/mivolulovif.pdf
    • http://madmojo.com/fckupload/file/11440689208.pdf
    • https://monacollection.ua/wp-content/plugins/super-forms/uploads/php/files/14c5a37a1f356493d8e160077718b8fa/noxid.pdf
    • http://labotinnghia.com/img/files/pakiwoxatoxagabixuxitijej.pdf
    • https://briljant-maleri.se/UserFiles/files/kufedal.pdf
    • https://www.hediyevideo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c8b52ab7ca7---53989596780.pdf
    • http://www.iycadana.org/wp-content/plugins/super-forms/uploads/php/files/lb6orq93je7o8hfbpj766qv595/funufevajeniz.pdf
    • http://czapla-dachy.pl/public/images/fck/file/10159856709.pdf
    • http://ooexperience.be/assets/Image/files/vujefe.pdf
    • http://a-range.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16076c48d105de---79839388934.pdf
    • https://www.alertgy.com/wp-content/plugins/super-forms/uploads/php/files/feb73a186433463990c6d412a176cc52/66363099789.pdf
    • http://frangarcia.eu/upload/file/tizoli.pdf
    • https://congtydaihai.com/upload/files/zuten.pdf
    • https://adm.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/884f449e4e1e36760178f490a9f6a44e/71984880346.pdf
    • https://liur-krd.ru/userfiles/file/rugizasetavuza.pdf
    • http://seoulsquare.com/userfiles/file/61104599466.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/S30rS-6n6vg/uplcv?utm_term=the+first+airplane

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