Malicious PDF — malware analysis report

Static analysis result for SHA-256 930a7ecd756fed12…

MALICIOUS

PDF

63.6 KB Created: 2021-09-06 12:47:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: d0ba7080d6383b3cd858e9a2ee821a02 SHA-1: 7ced14adde271f5da618c4a76b7f8b1169337bf0 SHA-256: 930a7ecd756fed1209bb1a5fd334498b22f6cb1e91474349fb841f92f017afdb
154 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which point to compromised WordPress installations and disposable hosting domains. This behavior is characteristic of a link farm used to distribute phishing content or malware. The ML classifier and ClamAV detection further support the malicious nature of this file.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6381

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://medvor.ru/uplcv?utm_term=plantadeira+manual+de+milho PDF link annotation
    • http://bjoybrands.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bbed0e951e4---48344640969.pdfIn PDF document text
    • http://paulsaperstein.com/userfiles/files/32673607892.pdfIn PDF document text
    • http://atut-biuro.com/uploaded/file/68563112953.pdfIn PDF document text
    • http://exactblue.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a37340bd156---53387647444.pdfIn PDF document text
    • http://cosmik-kino.ru/sadm_files/kutaxebutajovataguf.pdfIn PDF document text
    • https://puertoestereo.com/wp-content/plugins/super-forms/uploads/php/files/5tbg0qsc6f88615vp2qmoqahcp/84372678840.pdfIn PDF document text
    • http://ccswcd.com/userfiles/file/luseluze.pdfIn PDF document text
    • http://qboardapp.com/wp-content/plugins/super-forms/uploads/php/files/0c2b600361f7cf69aa8634d0a330165e/tivivewukekuzemu.pdfIn PDF document text
    • http://archiprojektai.lt/app/webroot/uploads/userfiles/files/72332700275.pdfIn PDF document text
    • https://resicolor.com/upload/files/zigewegosufewise.pdfIn PDF document text
    • http://erfaspot.com/resimler/files/xixakajikojavugepaziz.pdfIn PDF document text
    • http://evabody.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160ca51209fbe4---bosisiwabefowogekonaboler.pdfIn PDF document text
    • https://www.marthatrotts.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160c408055f900---7979195327.pdfIn PDF document text
    • https://alphaveneers.co.uk/wp-content/plugins/super-forms/uploads/php/files/f2166717f020fb96374d10f5859ec160/62449479939.pdfIn PDF document text
    • https://alenakovalchuk.ru/wp-content/plugins/super-forms/uploads/php/files/9b0018cb28bd8e576751354e88c8f33f/godejonutuveviton.pdfIn PDF document text
    • http://modnyi-buket.ru/uploads/files/lobuwutagafifanitokabone.pdfIn PDF document text
    • https://wineart.online/userfiles/file/85613160972.pdfIn PDF document text
    • https://bookatowncar.com/userfiles/file/27581753001.pdfIn PDF document text
    • https://mimpishio2bet.com/contents//files/44623681955.pdfIn PDF document text
    • https://www.costaverde.it/wp-content/plugins/formcraft/file-upload/server/content/files/16082884ad28c6---fidasutofosanewewut.pdfIn PDF document text
    • http://hit-air.pro/ckfinder/userfiles/files/xakajabowonoxuvapuj.pdfIn PDF document text
    • https://buddhaart.in/userfiles/file/99342240601.pdfIn PDF document text
    • https://armagedonspedycja.pl/files/file/36786622415.pdfIn PDF document text
    • https://bxthirteen.wpengine.com/wp-content/plugins/super-forms/uploads/php/files/0244ae676b0728990d519bc4c53b7e83/41021215030.pdfIn PDF document text

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