Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1fc27f42076bb46…

MALICIOUS

PDF

57.6 KB Created: 2021-09-19 18:03:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: 84758f34088446184334dd6ce555f184 SHA-1: 261ba0ee521c7aeaf6504d56ecbc42bc1b10cb29 SHA-256: d1fc27f42076bb46a7173043693011ef27e52abdbf754e624a1175aa98e49fe5
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains numerous external links, many hosted on compromised or disposable domains, indicative of a link farm used to distribute malicious content or phish users. ClamAV detection as 'Pdf.Phishing.Trojan' further supports its malicious nature. The ML classifier also flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5046

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 https://allytemp.ru/uplcv?utm_term=farmville+3+cheats+android PDF link annotation
    • https://beaszemin.com/files/xotojulololasulifuw.pdfIn PDF document text
    • http://homeopathyhongkong.cn/files/tateborawuxuzivurakomo.pdfIn PDF document text
    • https://atlas-consulting.ro/fckeditor/fisiere/file/nozogejatuli.pdfIn PDF document text
    • https://designmaster.in/scgtest/eec-new/codelibrary/ckeditor/ckfinder/userfiles/files/82590580974.pdfIn PDF document text
    • https://xn--z4qq44i.xn--kpry57d/upload/actfiles/45568874314.pdfIn PDF document text
    • https://kayakbranson.com/wp-content/plugins/formcraft/file-upload/server/content/files/161464fc6c1eee---lagupijupitiw.pdfIn PDF document text
    • http://glamour-nsk.ru/ckfinder/userfiles/files/mugedawemekelurapoviku.pdfIn PDF document text
    • http://ventss.ru/userfiles/files/77266346028.pdfIn PDF document text
    • https://proff-doors.ru/wp-content/plugins/super-forms/uploads/php/files/80aa06b8390f04690b7a002ae390ea0c/85862213817.pdfIn PDF document text
    • http://bananamusic.tw/uploads/files/202109110011117549.pdfIn PDF document text
    • http://zekejozsef.eu/FCKfeltoltott/file/negujazevebajowizebe.pdfIn PDF document text
    • https://girilawfirm.com/content_files/files/tafowunibalit.pdfIn PDF document text
    • http://1day2night.com/UserFiles/file/tulixesenasazofug.pdfIn PDF document text
    • https://berbagiangka.com/contents/files/32367859020.pdfIn PDF document text
    • https://marathonblainville.com/userfiles/files/71494384223.pdfIn PDF document text
    • http://caacoding.net/wp-content/plugins/formcraft/file-upload/server/content/files/161411059baef4---20327465116.pdfIn PDF document text
    • https://tidurmalam.com/contents/files/45691829683.pdfIn PDF document text
    • https://bokseinstituttet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/161468d32572ad---24099594306.pdfIn PDF document text
    • http://joyear.com/ckfinder/userfiles/files/siwow.pdfIn PDF document text
    • https://www.andeanskyline.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613cf8e9c7ee9---13795135450.pdfIn PDF document text
    • http://doremimarlikinsaat.com/userfiles/file/88201048454.pdfIn PDF document text
    • http://plenar.hr/wp-content/plugins/formcraft/file-upload/server/content/files/1613056bcd5b42---63788061404.pdfIn PDF document text
    • https://ximangcampha.vn/upload/files/29008953446.pdfIn PDF document text
    • http://serendipityorlando.com/wp-content/plugins/formcraft/file-upload/server/content/files/161356559a024d---88008790955.pdfIn PDF document text

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