Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d7ac1bad10517d4…

MALICIOUS

PDF

48.4 KB Created: 2021-07-02 02:56:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 5c474775a10529767b8fb2ef3b53db00 SHA-1: 64b3363a39128688d3556f63f15c201d3cee2078 SHA-256: 7d7ac1bad10517d49251ceac4f3914a0a45d68a133ee42df90c4b40558b3a13e
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was identified as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It functions as a link farm, containing numerous URLs pointing to compromised WordPress sites and other potentially malicious content. The presence of PDF_SEO_DISPOSABLE_LINK_FARM and PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM heuristics indicates a deliberate attempt to obscure the true destination and leverage compromised infrastructure. No scripts were extracted, but the overall structure suggests a phishing or malware distribution lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8472

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://www.olympussverige.se/wp-content/plugins/super-forms/uploads/php/files/232l8l566nkspha9lsns4u9g7u/xolewosam.pdf In PDF document text
    • https://apoiotelecom.com/imagens/img_fckeditor/file/guxogovirofen.pdfIn PDF document text
    • http://www.deco-interieure.com/userfiles/file/75837241121.pdfIn PDF document text
    • https://kalatranslation.co.uk/wp-content/plugins/super-forms/uploads/php/files/e5e9cb79fk51cra7sebkjio6kc/26986559942.pdfIn PDF document text
    • http://ccforum.kr/uploads/file/1623782072.pdfIn PDF document text
    • http://www.risingstars.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160c289ce4dbf8---gilolasubomawos.pdfIn PDF document text
    • https://aawyx.com/sites/default/imageuser/file/veduzorumag.pdfIn PDF document text
    • http://ahkjt.com/upfile/file/80663202207.pdfIn PDF document text
    • http://zabradli-znerezu.cz/userfiles/file/85212987772.pdfIn PDF document text
    • https://arihantgranites.in/wp-content/plugins/super-forms/uploads/php/files/da0m43qbmec99icburb9hnm484/tinajejalemubonikazabopu.pdfIn PDF document text
    • http://wbbray.com/wp-content/plugins/formcraft/file-upload/server/content/files/160beec107f2b3---rutagekugojokemagoxogo.pdfIn PDF document text
    • https://infravoip.com/wp-content/plugins/super-forms/uploads/php/files/596f87968066d74c8ded7ac665aa38be/61098981966.pdfIn PDF document text
    • https://pabausa.org/wp-content/plugins/formcraft/file-upload/server/content/files/160906633c9189---28444434647.pdfIn PDF document text
    • https://mattweidnerlaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a90ea1da6fc---majoxu.pdfIn PDF document text
    • https://www.arphplumbing.co.uk/wp-content/plugins/super-forms/uploads/php/files/fdpfa12s6uqsjtjignc30bukp9/pobomidud.pdfIn PDF document text
    • https://www.ideaklinikkadikoy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b075ec1c0b4---kodizowevakegujisiwij.pdfIn PDF document text
    • https://hotel-la-licorne.fr/userfiles/file/jomalokaruxuvavino.pdfIn PDF document text
    • http://morebricks.com/ckfinder/userfiles/files/40260066995.pdfIn PDF document text
    • https://jjmassociates.com/wp-content/plugins/super-forms/uploads/php/files/f8f457fbb231c35b53d272f56d0ad312/80383894564.pdfIn PDF document text
    • https://g-ortho.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607f355ceee10---mebanalotefisebosup.pdfIn PDF document text
    • https://www.bouwenaaneensterkwerkgeversmerk.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160cec996a08da---44558200312.pdfIn PDF document text
    • https://celovechurch.org/wp-content/plugins/super-forms/uploads/php/files/b3bf5fd49374da0f42bd2115d443da46/tudozisaru.pdfIn PDF document text
    • http://biotledlight.com/userfiles/file///tutegilobanevinejitipate.pdfIn PDF document text
    • http://mateuszkucharski.pl/admin/file/63644428758.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/1xuhb7AK25c/uplcv?utm_term=pinoy+movies+stream+online+freePDF link annotation

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

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