Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce6b3882914e491a…

MALICIOUS

PDF

62.4 KB Created: 2021-07-06 02:06:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: a80dfa2a9bbc9755b7350e901a72b6a7 SHA-1: 2215408875fe239cbfc60d611b46c69d0a726a2c SHA-256: ce6b3882914e491a32d35f5c063ebafdb0b95cbfcaa9870629cd85a5b05a0e67
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File

The PDF contains numerous embedded URLs, many of which point to compromised WordPress sites, suggesting a phishing or malicious redirection scheme. The ClamAV detection and ML classifier further support its malicious nature. The primary function appears to be directing users to potentially harmful external sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6435

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://inwebjor.ru/uplcv?utm_term=class+7+english+chapter+13+question+answer PDF link annotation
    • http://kraljicabih.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a0d26620ca1---matifelatazutonimula.pdfIn PDF document text
    • https://thietkewebseo.com/webroot/img/files/85444043028.pdfIn PDF document text
    • http://forter.vn/hinhanh/file/fevoxodavupoxemiv.pdfIn PDF document text
    • http://stopasbestos.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1606f6abad40a7---50526550693.pdfIn PDF document text
    • https://qualitycountscleaning.com/wp-content/plugins/super-forms/uploads/php/files/d266547d2ed4ad7f50bdcd4130b65bb2/75951777498.pdfIn PDF document text
    • http://europeanprofservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609112923238a---dalobuzonunuxiwufagisek.pdfIn PDF document text
    • http://healthywithhart.com/res/file/73886624687.pdfIn PDF document text
    • http://stroynerud-sm.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1609a39ab1cfd5---83705360120.pdfIn PDF document text
    • https://www.ideaklinik.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160bd17598667b---zivutekufejo.pdfIn PDF document text
    • https://relaxationplusmn.com/wp-content/plugins/super-forms/uploads/php/files/bfa3cc674e829cb22a8e11c253f77715/tosedasixedavaxapek.pdfIn PDF document text
    • https://solidpractise.com/files/userfiles/file/xijoge.pdfIn PDF document text
    • https://envomask.com/wp-content/plugins/super-forms/uploads/php/files/8f8c08db3308989b3ffcf03a6e2551f2/gobokakexanofawogeruj.pdfIn PDF document text
    • http://curry-box-deluxe.de/userfiles/file/87565309463.pdfIn PDF document text
    • https://legacyltg.com/wp-content/plugins/super-forms/uploads/php/files/f0bd0753d406c1d395caba2967b5736f/68351971713.pdfIn PDF document text
    • https://www.shopveriamici.com/wp-content/plugins/super-forms/uploads/php/files/7s25gicqsd4mqevqt9ojvim8nj/wimagexajeresatesitefux.pdfIn PDF document text
    • https://www.adcgrain.com/wp-content/plugins/super-forms/uploads/php/files/577aa96107cc4baa17dadab6be8354cc/81314534191.pdfIn PDF document text
    • https://samavetpharm.com/userfiles/files/xebevizujajina.pdfIn PDF document text
    • https://wita.lt/images/files/55911454803.pdfIn PDF document text
    • https://beachesbrewing.com/wp-content/plugins/super-forms/uploads/php/files/1d1335a2afbe279208f8e8498dfc0ae4/zasavofivixupowukeviku.pdfIn PDF document text
    • http://www.yourhealthyourchoice.org/wp-content/plugins/formcraft/file-upload/server/content/files/1606d5ff741fac---15632720206.pdfIn PDF document text
    • https://www.blackandwhite-salon.com/wp-content/plugins/super-forms/uploads/php/files/df40b8d9c65848ad9fb6bd6f9aab69f6/mugevufibal.pdfIn PDF document text
    • http://makaeximworld.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b5c6679f700---7721204127.pdfIn PDF document text

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