Malicious PDF — malware analysis report

Static analysis result for SHA-256 08894fdd7b9f5911…

MALICIOUS

PDF

103.6 KB Created: 2021-09-02 07:31:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: dd5507eec9ea95931d8e25e21096073a SHA-1: 5fa20d942d2c7a8ba96b3d89dbf5ebbdbaf960f9 SHA-256: 08894fdd7b9f5911f8fad9caf8cf1cc5b82e00db37e04c5503f55f8d4d9bc942
132 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample contains embedded JavaScript, which is a common technique for executing malicious code within PDF documents. It also exhibits characteristics of a link farm, directing users to multiple compromised WordPress sites. The ClamAV detection as 'Pdf.Phishing.Trojan' strongly suggests a phishing or trojan delivery intent.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4143

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
    • http://www.barankayalar.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/16105652e49489---tekebigikakatiba.pdf
    • http://drairtools.com/ckfinder/userfiles/files/33517278472.pdf
    • http://totaleclipsenv.com/wp-content/plugins/formcraft/file-upload/server/content/files/16096e01ad87ca---vodumi.pdf
    • http://www.salac.cz/ckfinder/userfiles/files/lidebawonapo.pdf
    • https://livredart.com/ckfinder/userfiles/files/jakowita.pdf
    • https://n-zvuk.ru/upload/file/48866586706.pdf
    • http://davidhammerstein.org/ckfinder/userfiles/files/89157073765.pdf
    • https://smartcrm.cloud/upload/files/74090084739.pdf
    • http://commune-bourre.com/userfiles/file/51666645752.pdf
    • https://beaumont-residence.com/wp-content/plugins/super-forms/uploads/php/files/88ctedt8n7ng7s6784dnagiaa0/19026668113.pdf
    • https://vuaship.com/wp-content/plugins/super-forms/uploads/php/files/p904j4k3tt2envhjpr41ne5jao/23733780567.pdf
    • https://noks.cz/wp-content/plugins/formcraft/file-upload/server/content/files/1609c7fbc108bc---22883221811.pdf
    • http://alexforstarlight.com/clients/4/41/4125d763bdae894b2c088b8c4c0f4705/File/63413600613.pdf
    • http://www.sensible-seeds-premium.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609510780c036---fitiribidopawaxet.pdf
    • https://veritiesinstitute.com/wp-content/plugins/super-forms/uploads/php/files/e4cd08bb7fa824b5152b77371d0bd8b1/xotabopamaxa.pdf
    • https://agrotehholding.ru/wp-content/plugins/super-forms/uploads/php/files/0efc6afcc12517545c23c473e8dbf85d/89834282444.pdf
    • http://luxcottage.ru/stroykamen/userfiles/files/1760101505.pdf
    • http://www.msjcongregation.org/www/js/ckfinder/userfiles/files/14265178309.pdf
    • http://antwerp-rentals.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f99ac4deae6---75752874163.pdf
    • http://terredellamagnagrecia.com/userfiles/files/38926818983.pdf
    • http://www.aadhar-interior.com/userfiles/file/19074581390.pdf
    • http://paddockj.com/user_data/editor/ckfinder/core/connector/php/upload/files/42011855790.pdf
    • https://stegopackaging.com/wp-content/plugins/super-forms/uploads/php/files/i29s2b1sla6r46j5hdh7rk7u2c/jalimot.pdf
    • https://event-connections.net/wp-content/plugins/formcraft/file-upload/server/content/files/16081fec308826---18023453289.pdf
    • http://audiomaster.se/wp-content/plugins/formcraft/file-upload/server/content/files/160e94a63546fd---togelamimutelapomo.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/S30rS-6n6vg/uplcv?utm_term=answers+for+questions+in+an+interview

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