Malicious PDF — malware analysis report

Static analysis result for SHA-256 8318559c2b2d8d2f…

MALICIOUS

PDF

65.1 KB Created: 2021-09-04 19:16:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: 109b9ce6fd668c2fda30ee5400607336 SHA-1: 7201ec9e36015c6610313277f45537fc6c39e1f0 SHA-256: 8318559c2b2d8d2f42f5d203fe7ad77dbf523f4d890f10e14f8291f2baa64ebc
132 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample is identified as malicious by ClamAV and exhibits characteristics of a phishing lure. It contains embedded JavaScript and numerous external URIs, many of which point to compromised WordPress sites or disposable hosting, suggesting an attempt to redirect users to malicious content. The PDF structure and embedded links indicate a likely spearphishing attachment used to deliver a payload or phish credentials.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.2704

Heuristics 6

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://asigurareingermania.ro/wp-content/plugins/super-forms/uploads/php/files/t9rg66st7f8n9p84edvsutudfb/70788671614.pdf In PDF document text
    • http://telegid.tv/userfiles/files/xolevuguvonaxolofe.pdfIn PDF document text
    • https://www.scanworld.se/wp-content/plugins/formcraft/file-upload/server/content/files/16094a6165d065---81328872892.pdfIn PDF document text
    • https://imagebeaute.fr/userfiles/file/pefosasetilimasibexu.pdfIn PDF document text
    • https://web-sila.ru/wp-content/plugins/super-forms/uploads/php/files/abb73ae8f096d77cef606a04edf2b0b1/sikibijoleropikoxu.pdfIn PDF document text
    • http://www.telsercom.com/wp-content/plugins/formcraft/file-upload/server/content/files/160acb41f850e1---xolopokazamukoxupuzum.pdfIn PDF document text
    • http://banphimchuot.com/userfiles/file/97396002786.pdfIn PDF document text
    • http://asalsold.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f86acc51cc4---39689763827.pdfIn PDF document text
    • http://bellezaeimagen.com.mx/wp-content/plugins/formcraft/file-upload/server/content/files/160f567d70188a---92054928620.pdfIn PDF document text
    • http://zkmeiqi.com/admin/ckfinder/upfile/files/37658571380.pdfIn PDF document text
    • http://quickvideo.nl/userfiles/file/96145092070.pdfIn PDF document text
    • https://aiwatopup.com/ckfinder/userfiles/files/96284065980.pdfIn PDF document text
    • http://pkynfe.net/userfiles/file/2029934212.pdfIn PDF document text
    • http://lagunarent.lt/ckfinder/userfiles/files/146517016.pdfIn PDF document text
    • http://bortran.com/upload/image/file/20210622035838.pdfIn PDF document text
    • https://pankalconstructora.com/wp-content/plugins/formcraft/file-upload/server/content/files/160981c4173298---44528885219.pdfIn PDF document text
    • https://icon-studios.com/userfiles/file/29190838353.pdfIn PDF document text
    • http://www.jhannahs.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c7cfc58137---37969511522.pdfIn PDF document text
    • https://www.westcountrystoves.co.uk/wp-content/plugins/super-forms/uploads/php/files/9b9a0949aecafb771bb659eba4319a33/16368537568.pdfIn PDF document text
    • http://imaginove.eu/data/Files/90040871620.pdfIn PDF document text
    • http://www.artefuoricentro.it/js/lib/ckfinder/userfiles/files/59999162031.pdfIn PDF document text
    • http://akvari-um.ru/userfiles/file/bijinituxojaki.pdfIn PDF document text
    • https://antoinepanau.com/wp-content/plugins/super-forms/uploads/php/files/d044b7a671a4df56b7740686db8e1746/zowuxokagomawide.pdfIn PDF document text
    • https://leicht-spb.ru/wp-content/plugins/super-forms/uploads/php/files/fd689a57104a42a21bafd355c3a0d59f/26973464876.pdfIn PDF document text
    • https://mercedesmazo.es/wp-content/plugins/formcraft/file-upload/server/content/files/160aca214798ee---8076727467.pdfIn PDF document text
    • https://g55net.com/webpagebuilder/ckfinder/userfiles/files/nafuvasalufovumijabexaraw.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/S30rS-6n6vg/uplcv?utm_term=syriac+english+bible+pdfPDF link annotation

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