Malicious PDF — malware analysis report

Static analysis result for SHA-256 7968959861c5e649…

MALICIOUS

PDF

47.8 KB Created: 2021-09-12 07:34:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-02
MD5: 750b092ccccf8286b3798ec723de0e07 SHA-1: f0e9014f5efd382b286d93d4dd2304e01e8d7f25 SHA-256: 7968959861c5e64919e986faee3bf5ae8c71b3026b368c7a583cda3c0cb5a20b
154 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or trojan threat. It contains numerous links, many pointing to compromised WordPress sites and disposable hosting, designed to redirect users to malicious content. The presence of link farms and UTM parameters suggests an attempt to obscure the final malicious destination and potentially track user engagement.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8987

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://sipare.com.ar/wp-content/plugins/super-forms/uploads/php/files/co167o8m9nlvsan8olkamdmh94/nabafujazapidegulevar.pdf In PDF document text
    • https://buddingheights.org/wp-content/plugins/formcraft/file-upload/server/content/files/16130a492d4fd5---28416222782.pdfIn PDF document text
    • https://www.spitalmoldovanoua.ro/ckfinder/userfiles/files/39382870361.pdfIn PDF document text
    • https://greenlakepaint.com/ckfinder/userfiles/files/77654957019.pdfIn PDF document text
    • http://axiomestates.com/userfiles/file/fepaxixumazirevokewipoju.pdfIn PDF document text
    • http://salman-group.com/userfiles/file/fidopabefezewoz.pdfIn PDF document text
    • https://ubk-sad.de/azubi/userfiles/files/jojem.pdfIn PDF document text
    • http://circuitvietnamcambodge.com/hinhanh/file/buvepikubo.pdfIn PDF document text
    • http://mamnonsaokhue.vn/app/webroot/files/ckfinder/files/6112003938.pdfIn PDF document text
    • https://markzone.az/wp-content/plugins/super-forms/uploads/php/files/fgsao8bd7meqd3tl6jd2jkh0df/75470784489.pdfIn PDF document text
    • https://photojet.bg/userfiles/file/58666812362.pdfIn PDF document text
    • https://pindimana.in/uploads/file/jititarajosekavumanuvajir.pdfIn PDF document text
    • https://jordan.si/dokumenti/file/gumotopimazew.pdfIn PDF document text
    • http://lamarchesainterita.be/lamarchesainterita/imgdb/news/files/lidok.pdfIn PDF document text
    • http://bibrka-school.org.ua/ckfinder/userfiles/files/3680497625.pdfIn PDF document text
    • http://apcmagon.com/userfiles/zufigetisezaxubopesegiwad.pdfIn PDF document text
    • http://soc-in.com/data/media/files/32533816947.pdfIn PDF document text
    • http://modamoda.nl/uploads/pic_lib/file/vidufikumadogena.pdfIn PDF document text
    • http://devison-matras.com/upload/file/xinobusoti.pdfIn PDF document text
    • https://lisacutler.com/wp-content/plugins/formcraft/file-upload/server/content/files/16133f0de70df6---26640134408.pdfIn PDF document text
    • http://www.barbazan-debat.fr/ckfinder/userfiles/files/memolidapenufufefosi.pdfIn PDF document text
    • http://mindentudor.hu/userfiles/file/4264245136.pdfIn PDF document text
    • http://chagatea.ru/wp-content/plugins/super-forms/uploads/php/files/7057fb3972931a31fe7a954e9bf02631/pupibixamivimub.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/1xuhb7AK25c/uplcv?utm_term=boot+galaxy+s7+in+safe+modePDF link annotation