Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5c1baafda110a89…

MALICIOUS

PDF

70.3 KB Created: 2021-06-27 23:45:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-01
MD5: bfafb81e1e97129a9531d97502d33e99 SHA-1: fc6979b245fae3d1b593955a54b8d10d64291074 SHA-256: c5c1baafda110a89dac30fd615866fd137b57d1a01dafcfb7a60696868a7c4ba
144 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File

This PDF document was flagged as malicious by ClamAV. The file embeds a large number of external links characteristic of an SEO link farm, many hosted on compromised CMS upload directories. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3605

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 http://auto-spec.ca/fck/file/71662750540.pdf In PDF document text
    • http://yasaitogo.com/uploads/files/fojarajokakobabu.pdfIn PDF document text
    • https://akarchlight.com/wp-content/plugins/super-forms/uploads/php/files/6427e4d4d4815bf09e67fb29b015c3f6/zatenufadujugamakejifowu.pdfIn PDF document text
    • http://osoboebludo.com/ckfinder/userfiles/files/31571139583.pdfIn PDF document text
    • http://79.170.40.182/boothtastic.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aaae9f75aeb---mirinazez.pdfPDF link annotation
    • https://alshamiltrading.com/alshamilfiles/file/51327440284.pdfIn PDF document text
    • https://www.gasserbush.com/wp-content/plugins/super-forms/uploads/php/files/a6176152ba8370af0124a6824165c710/kopiperunilenid.pdfIn PDF document text
    • https://aldea.work/wp-content/plugins/super-forms/uploads/php/files/2a11038b82217b9322c077f1582bf3a8/simipimiberi.pdfIn PDF document text
    • https://www.simcoerecovery.net/wp-content/plugins/super-forms/uploads/php/files/9p80tfnut6bsnfn8grk4o2b07o/detiguwuvilijopomatonem.pdfIn PDF document text
    • http://ovartec.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609c727cc03b3---nudajajoketugosolaxuj.pdfIn PDF document text
    • https://qualitycountscleaning.com/wp-content/plugins/super-forms/uploads/php/files/1dc2e48aa389eeb22bfd666aec94db0a/38341878404.pdfIn PDF document text
    • https://uniontend.com/userfiles/files/26995447216.pdfIn PDF document text
    • https://holzhaus-suedtirol.it/wp-content/plugins/formcraft/file-upload/server/content/files/160c8d998cfcfe---35844183437.pdfIn PDF document text
    • https://gpuhub.net/wp-content/plugins/super-forms/uploads/php/files/j6m162cpps0nfpdu5nsacbi87g/tominojulo.pdfIn PDF document text
    • https://allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/062526ad78c8df33328a9b76a471f7de/25472001260.pdfIn PDF document text
    • https://www.sesc.com.ua/wp-content/plugins/super-forms/uploads/php/files/rja7jpevretekd489bpu2pohk0/bulekimatazivijamajawelu.pdfIn PDF document text
    • https://camile.vn/wp-content/plugins/super-forms/uploads/php/files/g7vgtj0128n2l5t2a5lmni5g1b/voforufudeluri.pdfIn PDF document text
    • http://cbelmira.com/wp-content/plugins/super-forms/uploads/php/files/n44j8vuc9mu58gbicr9s8cfsf3/sixixi.pdfIn PDF document text
    • https://morethancleaningservices.com/wp-content/plugins/super-forms/uploads/php/files/389f115ec1dc79e1a8cd6fd7fae6378e/pateveruz.pdfIn PDF document text
    • https://sharidendesignasphalt.com/wp-content/plugins/super-forms/uploads/php/files/f62b98aa134ea3f103718a0767861ced/55731191910.pdfIn PDF document text
    • http://southportrubbish.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b0494b11e3a---99572458177.pdfIn PDF document text
    • https://superchills.com/userfiles/file/lezimigo.pdfIn PDF document text
    • http://milcontabil.com.br/wp-content/plugins/super-forms/uploads/php/files/vcmefbahg71uvbsgqdpjtdhgb0/31227720742.pdfIn PDF document text
    • https://addsfly.com/userfiles/file/22659750585.pdfIn PDF document text
    • http://lycee-elm.org/userfiles/file/56033053036.pdfIn PDF document text
    • https://www.lang-mayer.de/wp-content/plugins/formcraft/file-upload/server/content/files/16098b42aed23b---59833927593.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/cv9VXjIrmdE/uplcv?utm_term=adult+attachment+scalePDF link annotation