Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b92cd3ea0dc9afd…

MALICIOUS

PDF

49.9 KB Created: 2021-09-29 01:47:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-20
MD5: d14f475a182a53e2cd18b550b166a192 SHA-1: bd87b9a0c81d1a96fe4d2e2d90a5822c11653c7a SHA-256: 9b92cd3ea0dc9afdcc8a7317d45bf5358815ded813fc746050db81b872230328
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many of which point to disposable hosting or compromised CMS upload directories, indicating a link farm designed to redirect users. The ClamAV detection and ML classifier further support its malicious nature. While no scripts were explicitly extracted, the PDF structure and URL patterns suggest it's intended to lead users to phishing or malware download sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6282

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://smidgel.ru/uplcv?utm_term=movierulz+telugu+full+movie PDF link annotation
    • http://satakantaresort.com/user_img/files/48959437685.pdfIn PDF document text
    • http://steelbo.com/uploads/admins/u0/files/20210929013706.pdfIn PDF document text
    • https://www.caesarstravel.com/wp-content/plugins/formcraft/file-upload/server/content/files/161538ecd6e403---23337125903.pdfIn PDF document text
    • https://forumsevens.com/images/file/41239876184.pdfIn PDF document text
    • https://hv2barrier.com/application/third_party/ckfinder/userfiles/files/topifinokokevikogat.pdfIn PDF document text
    • http://disonde.com/filespath/files/20210920034531.pdfIn PDF document text
    • https://baust.edu.bd/app/webroot/ckfinder/userfiles/files/lojasefowamiwabatexez.pdfIn PDF document text
    • http://totaleclipsenv.com/wp-content/plugins/formcraft/file-upload/server/content/files/161344d519402c---19156863631.pdfIn PDF document text
    • https://gemicilojistik.com/userfiles/upload/file/50725753389.pdfIn PDF document text
    • http://businessplan-capalpha.fr/mbp/upload/images/images/upload/ckfinder/fomutatiso.pdfIn PDF document text
    • http://25630638.kad.tw/kads/ckfinder/userfiles/files/takutemaxuzasinerekaxilux.pdfIn PDF document text
    • https://5udua.com/contents/files/40150309747.pdfIn PDF document text
    • https://pgp-puh.hr/fck_media/file/91799288791.pdfIn PDF document text
    • http://www.ibadirect.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614585ff9c418---xodupegatevozemumululesal.pdfIn PDF document text
    • http://teplolux72.ru/upload/file/zifuxitosomokavazag.pdfIn PDF document text
    • http://studiorinaldibedin.eu/userfiles/files/1742382083.pdfIn PDF document text
    • https://griby.biz/ckfinder/userfiles/files/kulafalabaj.pdfIn PDF document text
    • http://clinicaveterinariabilancino.it/userfiles/files/zalorisibipirelegizemek.pdfIn PDF document text
    • https://christianboudreau.com/wp-content/plugins/formcraft/file-upload/server/content/files/161496cb29eca7---ximomupenomadul.pdfIn PDF document text
    • http://newtrichur.com/userfiles/file/nutefi.pdfIn PDF document text
    • http://clarksville.net/wysiwygfiles/file/27728344680.pdfIn PDF document text
    • http://avanti.pl/userfiles/file/11708565380.pdfIn PDF document text
    • http://bjaimama.com/data/upload/2021/09/file/202109261949138764.pdfIn PDF document text

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