Malicious PDF — malware analysis report

Static analysis result for SHA-256 0139eb0584626812…

MALICIOUS

PDF

95.4 KB Created: 2021-09-02 07:31:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 3a42df2570bae0c363526cb4b74e9a01 SHA-1: 84e94ed4d45c145748de07c3cdac85100f88a5df SHA-256: 0139eb058462681257895339e098a2b05e428233828a81d4cfabf56a5c8d06f5
132 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample contains embedded JavaScript, which is a common technique for exploiting PDF vulnerabilities or delivering malicious content. The PDF also features a link farm pointing to multiple distinct hosts, many of which appear to be compromised WordPress sites, suggesting an attempt to obscure the final destination or distribute payloads from various sources. The ClamAV detection as 'Pdf.Phishing.Trojan' further supports a malicious intent, likely related to phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3743

Heuristics 6

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://www.elektrobetrieb-scholz.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607997f57bfaf---saluziduxumezunud.pdf In PDF document text
    • http://www.barankayalar.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/16105652e49489---tekebigikakatiba.pdfIn PDF document text
    • http://drairtools.com/ckfinder/userfiles/files/33517278472.pdfIn PDF document text
    • http://totaleclipsenv.com/wp-content/plugins/formcraft/file-upload/server/content/files/16096e01ad87ca---vodumi.pdfIn PDF document text
    • http://www.salac.cz/ckfinder/userfiles/files/lidebawonapo.pdfIn PDF document text
    • https://livredart.com/ckfinder/userfiles/files/jakowita.pdfIn PDF document text
    • https://n-zvuk.ru/upload/file/48866586706.pdfIn PDF document text
    • http://davidhammerstein.org/ckfinder/userfiles/files/89157073765.pdfIn PDF document text
    • https://smartcrm.cloud/upload/files/74090084739.pdfIn PDF document text
    • http://commune-bourre.com/userfiles/file/51666645752.pdfIn PDF document text
    • https://beaumont-residence.com/wp-content/plugins/super-forms/uploads/php/files/88ctedt8n7ng7s6784dnagiaa0/19026668113.pdfIn PDF document text
    • https://vuaship.com/wp-content/plugins/super-forms/uploads/php/files/p904j4k3tt2envhjpr41ne5jao/23733780567.pdfIn PDF document text
    • https://noks.cz/wp-content/plugins/formcraft/file-upload/server/content/files/1609c7fbc108bc---22883221811.pdfIn PDF document text
    • http://alexforstarlight.com/clients/4/41/4125d763bdae894b2c088b8c4c0f4705/File/63413600613.pdfIn PDF document text
    • http://www.sensible-seeds-premium.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609510780c036---fitiribidopawaxet.pdfIn PDF document text
    • https://veritiesinstitute.com/wp-content/plugins/super-forms/uploads/php/files/e4cd08bb7fa824b5152b77371d0bd8b1/xotabopamaxa.pdfIn PDF document text
    • https://agrotehholding.ru/wp-content/plugins/super-forms/uploads/php/files/0efc6afcc12517545c23c473e8dbf85d/89834282444.pdfIn PDF document text
    • http://luxcottage.ru/stroykamen/userfiles/files/1760101505.pdfIn PDF document text
    • http://www.msjcongregation.org/www/js/ckfinder/userfiles/files/14265178309.pdfIn PDF document text
    • http://antwerp-rentals.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f99ac4deae6---75752874163.pdfIn PDF document text
    • http://terredellamagnagrecia.com/userfiles/files/38926818983.pdfIn PDF document text
    • http://www.aadhar-interior.com/userfiles/file/19074581390.pdfIn PDF document text
    • http://paddockj.com/user_data/editor/ckfinder/core/connector/php/upload/files/42011855790.pdfIn PDF document text
    • https://stegopackaging.com/wp-content/plugins/super-forms/uploads/php/files/i29s2b1sla6r46j5hdh7rk7u2c/jalimot.pdfIn PDF document text
    • https://event-connections.net/wp-content/plugins/formcraft/file-upload/server/content/files/16081fec308826---18023453289.pdfIn PDF document text
    • http://audiomaster.se/wp-content/plugins/formcraft/file-upload/server/content/files/160e94a63546fd---togelamimutelapomo.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/S30rS-6n6vg/uplcv?utm_term=answers+for+questions+in+an+interviewPDF link annotation