Malicious PDF — malware analysis report

Static analysis result for SHA-256 c69a9d33c7d9a227…

MALICIOUS

PDF

69.3 KB Created: 2021-08-10 09:23:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 7a6ca3dff610ef6b415ea6ea4e0b8e98 SHA-1: ddcc97cb0d0c98bf7467ffd9e155680578b6a40f SHA-256: c69a9d33c7d9a227e65db0f8f40d6ef2447821f37c828d133f334246f4a907c0
154 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It functions as a link farm, with numerous embedded URLs pointing to compromised websites, suggesting it's used to redirect users to malicious content or phishing pages. The presence of multiple distinct hosts and the use of disposable hosting further support this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8221

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 http://nirmalapublicschoolerumely.com/userfiles/file/17623367064.pdf In PDF document text
    • https://polinagerz.ru/wp-content/plugins/super-forms/uploads/php/files/51uk9jcqoaf2uqkrfj81qh7e05/jifopesutavafumenemodumi.pdfIn PDF document text
    • https://www.karenlovelee.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608c861c7a438---85923420354.pdfIn PDF document text
    • https://staffxrecruitment.com/wp-content/plugins/super-forms/uploads/php/files/10c4b263d870bcc5f3022c19ab32db8a/safuvokuwikeso.pdfIn PDF document text
    • http://yuseigachi.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160b6c7c59d6ca---nupisodupanigixarogek.pdfIn PDF document text
    • https://aplusadvance.com/naver_editor/data/file/japuxexavir.pdfIn PDF document text
    • https://www.amiunaorchestra.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160bfc85a527d6---65701903572.pdfIn PDF document text
    • https://www.axelendinggroup.com/wp-content/plugins/super-forms/uploads/php/files/6c9d0cddae953a2a96e9bec106ff2489/62720809656.pdfIn PDF document text
    • http://thegioidahoacuong.com/uploads/image/files/8565036395.pdfIn PDF document text
    • http://ondrejkocar.cz/img/file/virado.pdfIn PDF document text
    • http://grubstreet.ca/ckfinder/userfiles/files/fowero.pdfIn PDF document text
    • http://www.hkwebdesign.com.hk/wp-content/plugins/formcraft/file-upload/server/content/files/1609b8b1b2cffb---43813283959.pdfIn PDF document text
    • http://aromaonly1.com/yamituki-n/uploads/files/60598420507.pdfIn PDF document text
    • https://creationstationdance.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a405c97e1d1---80828855124.pdfIn PDF document text
    • https://extremetour74.ru/wp-content/plugins/super-forms/uploads/php/files/71c2f2b2ca18f064f6a28fa457b9e195/64941394112.pdfIn PDF document text
    • http://nek.ua/wp-content/plugins/formcraft/file-upload/server/content/files/160dd82511b0e3---zitikijisiwab.pdfIn PDF document text
    • http://deurwater.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aa36d50f9e5---kekebito.pdfIn PDF document text
    • http://www.gaviprintpack.com/wp-content/plugins/formcraft/file-upload/server/content/files/160716f4783d5e---3738316325.pdfIn PDF document text
    • http://nemdanangpho.com/uploads/2021-05-28/images/files/fopuxatuwiluvamaxaro.pdfIn PDF document text
    • http://pensionpoint.cz/userfiles/files/zidibam.pdfIn PDF document text
    • https://qualitycountscleaning.com/wp-content/plugins/super-forms/uploads/php/files/7ac9d0659aa393faae248bb7dda95b44/72088168420.pdfIn PDF document text
    • https://www.lokalesichtbarkeit.de/wp-content/plugins/super-forms/uploads/php/files/10qeeid0g2isa6ioomt04e5gjb/jogebo.pdfIn PDF document text
    • https://jdbailbonds.com/wp-content/plugins/super-forms/uploads/php/files/4f06a8274cf7704848a0d263abd41a51/kedasugerewonoti.pdfIn PDF document text
    • https://glosunspa.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f9055f69e0a---83106337156.pdfIn PDF document text
    • https://oykufestivali.com/ckfinder/userfiles/files/solujibafelote.pdfIn PDF document text
    • http://www.mvdisposal.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f37d868d86e---19513608060.pdfIn PDF document text
    • https://bocion.com/ckfinder/userfiles/files/19083044331.pdfIn PDF document text
    • http://www.immiflex.com/wp-content/plugins/formcraft/file-upload/server/content/files/160928fa8d0c79---53805348475.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BkSY9tpko7c/uplcv?utm_term=zodiac+signs+and+their+characteristics+pdfPDF link annotation