Malicious PDF — malware analysis report

Static analysis result for SHA-256 49fbcd6d3bfd9445…

MALICIOUS

PDF

65.1 KB Created: 2021-08-01 10:44:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: ceae41bd5d80bb8d714aa30c390cf6fa SHA-1: 940476a9ca8a30e3db0aed78691a74b4000b6748 SHA-256: 49fbcd6d3bfd944589e26c64c5042bb07774d3a47921ac5a74df507845088fc7
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm pointing to multiple domains, many of which appear to be compromised WordPress sites used for hosting malicious files. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution. No scripts were extracted, but the structure suggests an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9582

Heuristics 5

  • 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.
  • 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 http://lamexmarket.com/uploads/files/6191218517.pdf In PDF document text
    • http://klubalfa.org/img/userfiles/file/gunoz.pdfIn PDF document text
    • http://sh8ke.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a75e083a091---pomazikopifugimixivutanid.pdfIn PDF document text
    • https://skyzoan.com/cake/beta/userfiles/file/pojotofosupujolulosonad.pdfIn PDF document text
    • http://www.nanodrywash.com/wp-content/plugins/formcraft/file-upload/server/content/files/160878a37b6e1e---venobot.pdfIn PDF document text
    • https://k-kompany.ru/wp-content/plugins/super-forms/uploads/php/files/4a09857dc36fabdaea6fd0150dfb2ebc/lepuvazebimi.pdfIn PDF document text
    • http://wakingbeauty.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ccd907e00a---jixazimaxudolovitilejekas.pdfIn PDF document text
    • https://fitness-sport.it/userfiles/file/tukudidabatewizo.pdfIn PDF document text
    • http://atlantichomeportugal.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b510ea4ffc---gobimuxujib.pdfIn PDF document text
    • https://tehnol.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160985845c0c90---wejotudizafogeki.pdfIn PDF document text
    • https://drivingschoolofnorthtexas.com/wp-content/plugins/formcraft/file-upload/server/content/files/16090edff5edb8---pulusanade.pdfIn PDF document text
    • http://metzpaintings.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a4b933443e9---wakorabusaxagoj.pdfIn PDF document text
    • http://www.franklinwebdesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606fe66298f72---xilowasatoxajugumi.pdfIn PDF document text
    • http://ttmplus.com/userfiles/files/gezikumow.pdfIn PDF document text
    • http://pbsdeltarho50events.org/clients/d/dc/dc3fcb918f61c9276c5829b035df2abc/File/tilikatarelazami.pdfIn PDF document text
    • http://wawabed.pl/uploads/userfiles/file/zenajixodu.pdfIn PDF document text
    • https://www.davinci.dk/wp-content/plugins/formcraft/file-upload/server/content/files/160bed6c8d4714---wepomexidunuwe.pdfIn PDF document text
    • http://penzion-u-zamku.cz/files/file/79753093221.pdfIn PDF document text
    • https://ozsersogutma.com/upload/files/sison.pdfIn PDF document text
    • http://naturallymine-chicago.com/clients/867610/File/dafuturobivawuvotebekak.pdfIn PDF document text
    • https://betalinktech.com/blmedia/file/60617254044.pdfIn PDF document text
    • https://www.xcelsus.de/wp-content/plugins/formcraft/file-upload/server/content/files/1609dda40d6054---zegedajelanekogeputuni.pdfIn PDF document text
    • https://mimpisiluman.com/contents//files/pixiwagu.pdfIn PDF document text
    • https://heatingboiler.ca/fck_upload/file/13080744206.pdfIn PDF document text
    • http://crisismobile.com/ckfinder/userfiles/files/kovubunidurokidese.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3vuEKuznOb8/uplcv?utm_term=enduring+power+of+attorney+forms+ukPDF link annotation

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