Malicious PDF — malware analysis report

Static analysis result for SHA-256 4021cdf8af62cb46…

MALICIOUS

PDF

62.0 KB Created: 2021-10-10 10:22:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-23
MD5: 542133945aeb7e3990e0f3dd50eef3fd SHA-1: 9be039fbff33ad40a3ffc897468dd948eee94c15 SHA-256: 4021cdf8af62cb46bc2a161d9d12c330bee16295c48293601535f758d942df99
154 Risk Score

Malware Insights

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

The PDF contains a large number of links, many pointing to domains identified as compromised or disposable hosting, suggesting a link farm designed to distribute malicious content or phish users. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware delivery via these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7847

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://dialogueinpraxis.net/files/docs/95511192008.pdf In PDF document text
    • http://moveworldtogether.com/datas/files/losabeluzonid.pdfIn PDF document text
    • http://intelekt.biz/uploads/pages/files/fakapimovurulepaneba.pdfIn PDF document text
    • http://irk-yoga.ru/upload/files/61281229679.pdfIn PDF document text
    • http://casinodanmarkjackpot.dk/userfiles/file/rorajimani.pdfIn PDF document text
    • http://bikaji.zohukum.com/ckfinder/userfiles/files/56562684289.pdfIn PDF document text
    • http://singer-island-condos.com/userfiles/files/xoxogotivaporadizi.pdfIn PDF document text
    • http://villaturri.com/wp-content/plugins/formcraft/file-upload/server/content/files/161401096551f7---liwuxad.pdfIn PDF document text
    • https://stefandes.com/wp-content/plugins/formcraft/file-upload/server/content/files/16136521d6424d---suzalozotewewamez.pdfIn PDF document text
    • http://alrabbancapital.com/file/files/wiluzo.pdfIn PDF document text
    • https://hatinhjobs.com/upload/files/42588699287.pdfIn PDF document text
    • http://www.predoisiasociatii.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1614d7ac9a6310---13650833436.pdfIn PDF document text
    • http://congress.bpv.su/content/files/files/96078435403.pdfIn PDF document text
    • http://ontheedgeofnow.com/wp-content/plugins/formcraft/file-upload/server/content/files/1615986faac07d---497423886.pdfIn PDF document text
    • http://prefinancovaniehypoteky.sk/res/file/74447891869.pdfIn PDF document text
    • http://compie.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1613dec2ec8da8---mesirifa.pdfIn PDF document text
    • https://weblative.com/wp-content/plugins/super-forms/uploads/php/files/uatanj7rup0fvc517hl52gd5eg/vakexopaxametololod.pdfIn PDF document text
    • http://brodart01.com/wp-content/plugins/super-forms/uploads/php/files/rd32thfuucaacisdccl12ce95u/nikiragomugelokajebil.pdfIn PDF document text
    • https://kvizek.excore.hu/ckfinder/userfiles/files/xokulakuwasefesupawidi.pdfIn PDF document text
    • https://cinemaparadiso.site/uploads/files/sadukebinafufolol.pdfIn PDF document text
    • https://y3stwk65l-mn9.com/contents/files/23102071412.pdfIn PDF document text
    • http://baracenter.be/userfiles/file/boteman.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/S30rS-6n6vg/uplcv?utm_term=3+month+old+babyPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e24a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE24A 10348 bytes
SHA-256: 49a6fe643c96808487d63fbc276e9de40f323967738f2014a9609bf6eb1ce414

Open this report in the interactive analyzer, or submit your own file for analysis.