Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a7e73b45722b5ac…

MALICIOUS

PDF

69.3 KB Created: 2021-09-18 23:55:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-31
MD5: 733b64373ad4b73de9dff8ca36363825 SHA-1: 1c89aec9430272122fb09ca2ecec1f7606753482 SHA-256: 3a7e73b45722b5ac558670d480806a0af56f022c903aaf435492aed0b81e4921
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous embedded URLs, many of which point to compromised WordPress uploads or disposable hosting, suggesting a phishing or malware distribution attempt. The ClamAV detection as 'Pdf.Phishing.Trojan' strongly indicates malicious intent. While no scripts were explicitly extracted, the presence of external URIs and the overall structure points towards a phishing lure designed to trick users into downloading further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6374

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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://drafthe.ru/uplcv?utm_term=download+octopus+32+bit+apk PDF link annotation
    • https://dmddsgn.com/wp-content/plugins/super-forms/uploads/php/files/4eb47710f5855b8ef77932c0a0ea5d73/40343188921.pdfIn PDF document text
    • http://www.mediagrand.hu/data/editorfile/kiwigamadatawuxawitaj.pdfIn PDF document text
    • http://kozhencherrymtc.org/userfiles/file/99433037115.pdfIn PDF document text
    • http://thegioidahoacuong.com/uploads/image/files/34207084519.pdfIn PDF document text
    • http://machinesupplier.cn/data/product/file/2021918_18333_168.pdfIn PDF document text
    • http://lollanaclinic.com/image/upload/File/wuvutikebumi.pdfIn PDF document text
    • http://jucal.es/images/file/jetitubaresadolu.pdfIn PDF document text
    • http://stadion-zarya.ru/ckfinder/userfiles/files/31471613641.pdfIn PDF document text
    • https://alubiasdetolosa.com/files/galeria/files/98462001064.pdfIn PDF document text
    • http://www.maderas-navarro.com/ckfinder/userfiles/files/fejim.pdfIn PDF document text
    • https://www.eecpowerindia.com/codelibrary/ckeditor/ckfinder/userfiles/files/fuzivot.pdfIn PDF document text
    • http://157.230.241.115/image/upload/File/pulezor.pdfPDF link annotation
    • http://garderoba.sk/images/_file/nowivolawirirurevusibu.pdfIn PDF document text
    • http://maybomnuocdanang.com/uploads/image/files/vemojeb.pdfIn PDF document text
    • https://tybistanbul.org/resimler/files/10680468487.pdfIn PDF document text
    • https://www.ideaklinikkadikoy.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613aabfd43169---82230472149.pdfIn PDF document text
    • http://michelschuurmans.nl/images/uploads/file/gamupabebosuwobutotigik.pdfIn PDF document text
    • http://anton-joyeros.shopcloud.es/ckfinder/userfiles/files/29574119351.pdfIn PDF document text
    • http://awkontrakt.pl/ckfinder/userfiles/files/65999952738.pdfIn PDF document text
    • http://educaholistica.com/resources/img/imagesck/files/pasusujed.pdfIn PDF document text
    • https://sk-developers.com/wp-content/plugins/formcraft/file-upload/server/content/files/16139ee219ea09---1108852561.pdfIn PDF document text
    • https://globaltranslation.com/demo/global_translation/beta/userfiles/files/41824781507.pdfIn PDF document text
    • http://vuason.vn/upload/files/waxerisizijoguxuko.pdfIn PDF document text
    • http://boston.pl/fck_pliki/file/82250589726.pdfIn PDF document text

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