Malicious PDF — malware analysis report

Static analysis result for SHA-256 0344d2ea27946a91…

MALICIOUS

PDF

62.0 KB Created: 2021-09-05 03:54:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: af45b3845350d7032d617751199c0cbf SHA-1: 51e5cc78b3950ca2c53d510b6128eeaeebd92923 SHA-256: 0344d2ea27946a910e22141b4a1faaac8d3e1dd27acc6b87302af0989005765c
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains numerous external URIs and links to compromised WordPress upload storage and disposable hosting, suggesting it is part of a link farm designed to redirect users. The embedded URLs likely lead to phishing sites or further malware downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8029

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://cructi.ru/uplcv?utm_term=happy+birthday+piano+notes+pdf PDF link annotation
    • https://www.ltgpartners.com/wp-content/plugins/super-forms/uploads/php/files/83fed174c391322a30314805258cae21/gavaxosopazivotamofudizin.pdfIn PDF document text
    • http://sl1971.com/clients/5/51/517263f0417f9379c67e6eba0e0bdfe8/File/63621806626.pdfIn PDF document text
    • https://benhgout.net/uploads/Files/file/vogeroxinixotiramew.pdfIn PDF document text
    • https://www.hinogas.com/wp-content/plugins/super-forms/uploads/php/files/c8p1jvhcnkblgp8pn9kedr44in/kobajominavuxifatevomubu.pdfIn PDF document text
    • http://araonline.hu/uploads/file/65360217934.pdfIn PDF document text
    • https://szud94.hu/img/sajatfile/files/kasidogakufama.pdfIn PDF document text
    • https://adurucui.com/ckfinder/files/zaleku.pdfIn PDF document text
    • https://baohohoanglong.com/userfiles/file/venikolirigegupuzim.pdfIn PDF document text
    • http://kadh.kr/bobod/upload/file/dejekodevotadezapuw.pdfIn PDF document text
    • http://gardatrans.com/content/Files/danodunugolonulat.pdfIn PDF document text
    • https://dungcuruamui.com/wp-content/plugins/super-forms/uploads/php/files/019332g9577k3a67hr2kp551gl/kekizadir.pdfIn PDF document text
    • http://www.lightingandhvacexpo.com/wp-content/plugins/super-forms/uploads/php/files/09386fff8b46a4f9e14c1625528563e9/xalijiv.pdfIn PDF document text
    • https://ddshower.com/ckfinder/userfiles/files/segafarunopamirarozes.pdfIn PDF document text
    • http://xn--80akij1ajew.xn--p1ai/wp-content/plugins/formcraft/file-upload/server/content/files/160f31596d3a8d---vamunatujekivixezox.pdfIn PDF document text
    • http://global-poseg.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a3148e56405---93529960419.pdfIn PDF document text
    • http://groupkaishan.com/d/files/15449059439.pdfIn PDF document text
    • http://haciogullari.com/depo/sayfaresim/file/sekivo.pdfIn PDF document text
    • https://www.harnoordesigns.com/wp-content/plugins/super-forms/uploads/php/files/rch5lmd32jbice0i3cdtesoi86/43928720894.pdfIn PDF document text
    • https://wilsonbarrera.com/inicio/wp-content/plugins/formcraft/file-upload/server/content/files/161305c1c815c3---5920141493.pdfIn PDF document text
    • http://endustriyelkiralama.com/wp-content/plugins/super-forms/uploads/php/files/7prvq6mniieg4oh5491ios6gb5/7295648976.pdfIn PDF document text
    • http://xn--kprq5pvqklteonubj6c.tw/CKEdit/upload/files/95078275181.pdfIn PDF document text
    • https://bokseinstituttet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/1607a5471c4b68---futoxibufakeluluxoxaja.pdfIn PDF document text
    • http://www.a-fairys-choice.com/wp-content/plugins/formcraft/file-upload/server/content/files/16098b3d81631f---senegibemir.pdfIn PDF document text
    • http://allnatureint.com/userfiles/file/jirufaresu.pdfIn PDF document text
    • https://hotelexpert.ro/uploads/files/98358848289.pdfIn PDF document text
    • http://artmetinc.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cd08fd7bcf---rirazev.pdfIn PDF document text

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