Malicious PDF — malware analysis report

Static analysis result for SHA-256 778414999efadb5d…

MALICIOUS

PDF

87.7 KB Created: 2021-09-06 03:12:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: d241e1592caf9b88eefc4b4d04575a48 SHA-1: 9633fc710b221905f5992bb75bb21f08fa440ca3 SHA-256: 778414999efadb5d646f6886ee2a8ee0dbdf93f2fce8c2f348608e7a285ba4ed
124 Risk Score

Malware Insights

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

The file was detected by ClamAV as Pdf.Phishing.Trojan. Static analysis revealed that the PDF contains a link farm pointing to numerous domains, many of which appear to be hosted on compromised CMS uploads or disposable hosting. These links are likely intended to lead users to phishing sites or download further malicious content.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3411

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://steakclubhn.com/campannas/file/86498472711.pdf In PDF document text
    • https://xebecdesign.com/xebec/userfiles/file/27753822350.pdfIn PDF document text
    • http://offerseir.com/basefile/offerseircom/files/rarojawapetolagezogemi.pdfIn PDF document text
    • http://ottotech.center/userfiles/file/tawani.pdfIn PDF document text
    • https://ipcare.nl/wp-content/plugins/super-forms/uploads/php/files/sq1opf55pef3h8oo4ceot1rsc2/wikifisafoxewasupofe.pdfIn PDF document text
    • https://www.hauptsache.cc/wp-content/plugins/formcraft/file-upload/server/content/files/160a71b6eec643---8276584398.pdfIn PDF document text
    • http://cedresarquitectura.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609caae510cdb---vadetageviguwusoruwa.pdfIn PDF document text
    • http://timelessmebel.ru/wp-content/plugins/super-forms/uploads/php/files/d374826ad3f5059e156ade12b25dbde1/tukepezivukawidaditelokul.pdfIn PDF document text
    • http://staging.impactredevelopment.com/wp-content/plugins/formcraft/file-upload/server/content/files/16073ffc819779---depufonisijix.pdfIn PDF document text
    • http://gz-theoutfit.com/UploadFiles/FCKeditor/20210626085310.pdfIn PDF document text
    • http://w-mill.jp/images/file/bawasupomevisin.pdfIn PDF document text
    • https://gulf-rope.com/images/bulk_images/files/budevoboguva.pdfIn PDF document text
    • http://www.franklinwebdesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d3730211c3---tovozuwunoko.pdfIn PDF document text
    • https://festivalecolo.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160e2f6919e56e---80306516467.pdfIn PDF document text
    • http://sweetbasketsbyjackie.com/clients/864293/File/gugutedadefamul.pdfIn PDF document text
    • https://www.ptlittleflower.org/wp-content/plugins/super-forms/uploads/php/files/04q1jbcsroharrkuaknof8h2l3/53598960070.pdfIn PDF document text
    • https://grandhotelbulgaria.com/userfiles/file/28625868783.pdfIn PDF document text
    • http://unsersohn.ch/images/file/7399240834.pdfIn PDF document text
    • https://alnahamgroup.com/userfiles/file/67916254943.pdfIn PDF document text
    • http://marsalanoleggio.it/userfiles/files/26894981411.pdfIn PDF document text
    • http://djapm.com/userfiles/file/4946707193.pdfIn PDF document text
    • http://alexlunacoach.com/img/editor/file/14013291766.pdfIn PDF document text
    • http://karimeh.com/public/userfiles/file/8481574188.pdfIn PDF document text
    • https://www.m2asolutions.com/wp-content/plugins/super-forms/uploads/php/files/27264d256d91ff7583037dfc46afc1db/rapedivosawosidadorufe.pdfIn PDF document text
    • https://christembassybarking.org/wp-content/plugins/super-forms/uploads/php/files/5ba1e8023dad822f167bac0f3aefe6ec/78942741312.pdfIn PDF document text
    • http://baikalspring.ru/ckfinder/userfiles/files/21889799203.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/GLLx1DTH0VQ/uplcv?utm_term=alter+ego+plus+2+pdfPDF link annotation

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