Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f6d7a8b536e6465…

MALICIOUS

PDF

59.5 KB Created: 2021-09-06 21:37:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 76bba377b54bffa11a11e9b6977622b7 SHA-1: 3370ffef73ef50662be02f748f8d1ea9b70848b8 SHA-256: 6f6d7a8b536e6465fa72495aec199f159995b509eb795460fed94c25c54f265d
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as a phishing trojan by ClamAV. Static analysis revealed it functions as a link farm, with numerous URLs pointing to compromised WordPress sites and other disposable hosting. These links likely lead to phishing pages or further malware downloads, indicating a malicious intent to deceive users.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3863

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://irlanc.ru/uplcv?utm_term=finding+asymptotes+worksheet+pdf PDF link annotation
    • https://stellabakingcompany.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609123cd51b6a---tatedumodiwifabisalo.pdfIn PDF document text
    • http://library.nesdb.go.th/ic/admin/ckfinder/userfiles/files/2823289789.pdfIn PDF document text
    • http://instandee.com/Images_upload/files/zabibudimipixavap.pdfIn PDF document text
    • https://allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/d96e2d903ea79faf163d5900125283c7/5012022332.pdfIn PDF document text
    • http://supermarketdv.ru/files/file/98660274394.pdfIn PDF document text
    • http://heninrealty.com/userfiles/files/63466321084.pdfIn PDF document text
    • http://ipjanah.ir/wp-content/plugins/super-forms/uploads/php/files/q41isr1m5i8nonl35apou7r1ju/lorulafizilinobimimezeb.pdfIn PDF document text
    • http://tubietelbar.hu/uploadfile/28073088462.pdfIn PDF document text
    • http://www.oknookna.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1609baa1675058---bikifede.pdfIn PDF document text
    • http://dossalas.com/wp-content/plugins/super-forms/uploads/php/files/739deb922c7b962c648c9a8a349bf59c/tuboludugofixapugoxex.pdfIn PDF document text
    • http://beloezoloto.ru/userfiles/file/73029720877.pdfIn PDF document text
    • http://www.191seo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608cf6bb49f5f---84777737919.pdfIn PDF document text
    • http://sovaimm.it/userfiles/files/22874698423.pdfIn PDF document text
    • https://plumcourse.com/wp-content/plugins/super-forms/uploads/php/files/85562bf23e74cb790e9976f91c1332b9/41892931460.pdfIn PDF document text
    • https://www.chesapeake-lighting.com/wp-content/plugins/super-forms/uploads/php/files/f54d6a618ec54e87cf9c528e13a14540/rewupebebovaveduk.pdfIn PDF document text
    • http://acecaalcoy.com/userfiles/file/bowisamabibaxizidali.pdfIn PDF document text
    • http://www.sunaryem.com.tr/wp-content/plugins/super-forms/uploads/php/files/go86ad1p9vbhfcr73ijh1td634/41048491687.pdfIn PDF document text
    • http://www.petersmetalstitching.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16078b7292a655---87490271210.pdfIn PDF document text
    • http://intechsol.kz/wp-content/plugins/formcraft/file-upload/server/content/files/160c6baaa19931---45493304435.pdfIn PDF document text
    • http://a-kamen.com/userfiles/file/63443927524.pdfIn PDF document text
    • https://vicotelecom.vn/static/source/images/file/48042423199.pdfIn PDF document text
    • http://ericshartman.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/domusibikuzufegaxerep.pdfIn PDF document text
    • https://agsposure.org/wp-content/plugins/super-forms/uploads/php/files/9c80a92b3d2cf85b0361fc1f58ba7213/pafogow.pdfIn PDF document text
    • http://styropapex.pl/userfiles/file/fapulojuzavug.pdfIn PDF document text
    • http://1000projects.ru/upload_picture/file/95830487384.pdfIn PDF document text

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