Malicious PDF — malware analysis report

Static analysis result for SHA-256 22783ad397d10551…

MALICIOUS

PDF

73.4 KB Created: 2021-07-08 07:54:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: 3b85eef6c1d4368b5be539ecd104c1ec SHA-1: 93ff299af1e15419f0a699b07d59893e87d2cdfb SHA-256: 22783ad397d10551b353230bd9d00ec4edb50ebc4c701ec9fa4926c52b5105d5
124 Risk Score

Malware Insights

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

The file was detected as a phishing trojan by ClamAV. Static analysis revealed it functions as a link farm, containing numerous URLs pointing to compromised CMS upload directories and disposable hosting. These links likely serve to redirect users to malicious sites for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3403

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 http://st-johnson.com/Uploadfiles/files/nenanesebakalaju.pdf In PDF document text
    • http://ttmplus.com/userfiles/files/raviz.pdfIn PDF document text
    • http://training-solutions.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160a4b01ece554---99638649353.pdfIn PDF document text
    • http://vizcsap.hu/files/file/rigajinulodasetofuwugukuj.pdfIn PDF document text
    • http://taeguektour.com/FileData/ckfinder/files/20210529_DA7EB64C7EBDDAE0.pdfIn PDF document text
    • http://ankurgroups.com/userfiles/file/31598676082.pdfIn PDF document text
    • http://ar-intl.net/wp-content/plugins/super-forms/uploads/php/files/16qojrib5k70kbgo8c8t9v83e4/90401603129.pdfIn PDF document text
    • http://ziepniekkalns.lv/wp-content/plugins/formcraft/file-upload/server/content/files/160b7ac12d727c---7177011108.pdfIn PDF document text
    • https://pointsourcegroup.com/wp-content/plugins/super-forms/uploads/php/files/e8593baa75289427792d341bfa2981e1/3318223588.pdfIn PDF document text
    • http://tlxzkj.com/uploads/file/131554421172.pdfIn PDF document text
    • http://flirdining.com/uploads/files/liwimilepafodipafux.pdfIn PDF document text
    • http://hysansam.com/fckeditor/userfiles/image/sekezurexanosi.pdfIn PDF document text
    • https://ferado.vn/userfiles/file/14519189055.pdfIn PDF document text
    • https://www.hadlowsecurityshutters.com/wp-content/plugins/super-forms/uploads/php/files/e56d2b922fab4fcb88a1a5bedfa96708/42656368298.pdfIn PDF document text
    • https://www.stjohnhomelessshelter.org/wp-content/plugins/super-forms/uploads/php/files/44bf57466795182defa29f6b846542e3/lifiwutakajipus.pdfIn PDF document text
    • https://rittenhousesmiles.com/wp-content/plugins/super-forms/uploads/php/files/149ad64858709e98d5088b63d1eaf61e/rebazefa.pdfIn PDF document text
    • https://coffeetuanvang.com/Images_upload/files/19084744929.pdfIn PDF document text
    • http://www.kreasoft.mx/wp-content/plugins/formcraft/file-upload/server/content/files/160d2bfab5d04b---79788974859.pdfIn PDF document text
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b29fe618bf7---19535409006.pdfIn PDF document text
    • http://training-solutions.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1607c9d48b9624---11040905259.pdfIn PDF document text
    • http://www.nbrownies.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1606f63b2740cd---72852953188.pdfIn PDF document text
    • https://www.bakirkoytemsilcisi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606e54e410d43---mabopiranowu.pdfIn PDF document text
    • https://www.jscorporation.co.in/wp-content/plugins/formcraft/file-upload/server/content/files/16081478fe9a7d---disiwetaluk.pdfIn PDF document text
    • http://maidnheaven.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607aca9679e3e---81133025560.pdfIn PDF document text
    • http://ramenzoni.eu/userfiles/files/gurenegibanojesetixazobu.pdfIn PDF document text
    • http://sosnovgeo.ru/userfiles/file/tonawugera.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/A3Ryygt5BCM/uplcv?utm_term=shadowave+username+and+passwordPDF link annotation

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