Malicious PDF — malware analysis report

Static analysis result for SHA-256 e38baabcc670203d…

MALICIOUS

PDF

49.8 KB Created: 2021-09-04 19:01:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: bfc43855fef87d532895bec0bef7dd0f SHA-1: 20aa9d6172128f8e62025909dfdbb2ba96b80c56 SHA-256: e38baabcc670203df4f37d2c3346dab37ea561094c0a357566e058657ae18d11
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which point to compromised websites or disposable hosting, indicating a link farm designed to lure users to malicious destinations. ClamAV detection as 'Pdf.Phishing.Trojan' and ML classification further support its malicious nature. The primary goal appears to be directing users to potentially harmful content through a deceptive link structure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7126

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 https://queure.ru/uplcv?utm_term=drilling+engineer+job+description+pdf PDF link annotation
    • https://hotelristorantenovecento.it/wp-content/plugins/super-forms/uploads/php/files/9b9ea7490a355e8277b0001d6dac3b64/98432468138.pdfIn PDF document text
    • https://nurdagihaber.com/resimler/files/nofefojupazuwegegevedix.pdfIn PDF document text
    • http://itaindustrial.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16075bd03f25f9---1216984083.pdfIn PDF document text
    • https://barrierball.cl/ckfinder/userfiles/files/kokipebuvorona.pdfIn PDF document text
    • http://alexlunacoach.com/img/editor/file/11022914890.pdfIn PDF document text
    • https://chulintemple.org/CKEdit/upload/files/luzajizekisovobanuzun.pdfIn PDF document text
    • https://gbeequestriansurfaces.com/wp-content/plugins/super-forms/uploads/php/files/fbpmu8phjf9qeruj4ejl24k07j/xasulenararugete.pdfIn PDF document text
    • http://goldmustang.ru/files/files/pisamajatuwelabutevilinaj.pdfIn PDF document text
    • http://phongkhamducphuc.net/images/files/4790152225.pdfIn PDF document text
    • http://www.movingintofreedom.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080beaab2e8f---xunijapomuxilomunurud.pdfIn PDF document text
    • http://hutergroup.de/userfiles/file/xubedagotiloguji.pdfIn PDF document text
    • http://ddservice-bmw.pl/userfiles/file/44329920440.pdfIn PDF document text
    • https://www.dentaltaxpros.com/wp-content/plugins/super-forms/uploads/php/files/30684e125e700d0d969ee144c05f496d/feniruxapo.pdfIn PDF document text
    • http://www.alexgis.com/siteuploads/editorimg/file/kulonekisezoluvif.pdfIn PDF document text
    • http://czdashan.cn/uploadfile/file/2021061307435473499.pdfIn PDF document text
    • http://canxetaianhduc.com/images/file/tenab.pdfIn PDF document text
    • http://cdmatik.com/uploads/file/pakadiwaliritufo.pdfIn PDF document text
    • https://bucatariizidite.ro/printuri-fi/files/zepujuwonupimi.pdfIn PDF document text
    • https://prosegik.com/wp-content/plugins/super-forms/uploads/php/files/6147caebf56054ba1a3f7cf9bb47724e/nilabewute.pdfIn PDF document text
    • https://facades-et-traditions.com/actualites/file/bevoliwejupepezezokavulo.pdfIn PDF document text
    • https://www.helpagesl.org/wp-content/plugins/formcraft/file-upload/server/content/files/160898991cbd32---sekifejuzifopato.pdfIn PDF document text

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