Malicious PDF — malware analysis report

Static analysis result for SHA-256 c10506d0d4113ee1…

MALICIOUS

PDF

63.7 KB Created: 2021-09-07 19:52:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 144bf11eaa29019a0bc1d1c797add18b SHA-1: 19abaf03abc9e6059a159effc198a7b69630a42f SHA-256: c10506d0d4113ee1f8e55bded4a24f374f821e6f3e382fcbe241d3a2acac7586
124 Risk Score

Malware Insights

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

The ClamAV heuristic identifies this PDF as a phishing trojan. Multiple heuristics indicate the PDF contains a link farm pointing to compromised WordPress upload directories and disposable hosting, suggesting an attempt to distribute malicious files. The embedded URLs, while some are marked benign, are part of a larger pattern of hosting potentially malicious content.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4986

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://weinquartier.at/wp-content/plugins/super-forms/uploads/php/files/5ba4780dd632e5c9e74eed4eb41a4116/72055590949.pdf In PDF document text
    • https://mediabandit.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b7853b447c5---senaloxuwukuvivarekanudav.pdfIn PDF document text
    • https://nicklason.se/ckfinder/userfiles/files/xafebasejisuduno.pdfIn PDF document text
    • http://www.radiopopiatej.com/wp-content/plugins/formcraft/file-upload/server/content/files/16090a9008b355---13323159794.pdfIn PDF document text
    • https://alakharia.com/public_html/userfiles/file/xajev.pdfIn PDF document text
    • http://houselandia.ru/files/nijexaraledegasabukegole.pdfIn PDF document text
    • http://www.expertnutritionadvisor.com/wp-content/plugins/formcraft/file-upload/server/content/files/16094ccb4d781f---boteloketagumo.pdfIn PDF document text
    • https://rumahbaruku.com/contents//files/nonemepomepozamananusuke.pdfIn PDF document text
    • http://bellina.pl/userfiles/file/12807561883.pdfIn PDF document text
    • http://lutechmed.com/Images_upload/files/guwunidiruzesefusipabo.pdfIn PDF document text
    • http://reclaimsplus.com/wp-content/plugins/super-forms/uploads/php/files/1793c96bd9090fb817c46c643d0c9ebc/59490886589.pdfIn PDF document text
    • http://abwingstop.com/uploads/files/kofur.pdfIn PDF document text
    • http://aucoindeshalles.com/menu/file/wulitifipepuf.pdfIn PDF document text
    • https://kodeac.com/wp-content/plugins/super-forms/uploads/php/files/niuv1jvf1jeqpv4bdqkmaq3em9/63856780213.pdfIn PDF document text
    • http://gldbirdgel.com/user_img/files/joxuripuraridogod.pdfIn PDF document text
    • https://hoangvan.vn/wp-content/uploads/files/nujununumizopijamovifu.pdfIn PDF document text
    • http://architettosbaffo.com/userfiles/files/77201818749.pdfIn PDF document text
    • https://asigurareingermania.ro/wp-content/plugins/super-forms/uploads/php/files/c29foc9osjtfi0506j2osftkqn/39373248829.pdfIn PDF document text
    • https://www.pietri-automobiles.com/wp-content/plugins/super-forms/uploads/php/files/m35cmnf1hg8bi155g4sv93c8bo/58722825716.pdfIn PDF document text
    • https://www.harnoordesigns.com/wp-content/plugins/super-forms/uploads/php/files/d5s014n0mm221hffp5ch742td7/wuxogekudetonu.pdfIn PDF document text
    • http://eske.hu/wp-content/plugins/formcraft/file-upload/server/content/files/1607140f3d168c---37711627025.pdfIn PDF document text
    • https://noble-worldwide.com/wp-content/plugins/super-forms/uploads/php/files/9bb540129e7ed4861c94580dcec7436c/kovubinosolesesupala.pdfIn PDF document text
    • https://deltagroup.bg/uploads/file/77384287279.pdfIn PDF document text
    • https://daleplumbinginc.com/wp-content/plugins/super-forms/uploads/php/files/160348c8c2dcabcd5790832588264d2f/45084588240.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/S30rS-6n6vg/uplcv?utm_term=samsung+tv+service+manual+pdfPDF link annotation

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