Malicious PDF — malware analysis report

Static analysis result for SHA-256 21b1ebc76ad66b4b…

MALICIOUS

PDF

69.8 KB Created: 2021-07-14 01:05:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: f064ab3bdfa079e92f57ff8ad5dbf411 SHA-1: fcdc21bcc9ad986e701cc9149d8d1c5d51f17d29 SHA-256: 21b1ebc76ad66b4b4b7f555bf8448b8864891c26954e5a4cc4e81eee0a70dafd
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The file is a PDF that contains a large number of links, many of which point to compromised WordPress sites. The ClamAV detection indicates it is a phishing or trojan PDF. The embedded URLs likely lead to malicious content or phishing pages, serving as a lure to trick users into clicking.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4988

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 https://inwebjor.ru/uplcv?utm_term=jquery+hover+toggle PDF link annotation
    • https://wavesmaroochydore.com/wp-content/plugins/super-forms/uploads/php/files/b7u1faiussivofl4t8hohhcq4h/78910226993.pdfIn PDF document text
    • http://clubmaniacr.com/campannas/file/75159021964.pdfIn PDF document text
    • https://ecomassage.pt/wp-content/plugins/super-forms/uploads/php/files/hmlr6icajsi6hprtfkufidfhv8/33696848399.pdfIn PDF document text
    • http://bong-dem-long.org/upload/editor/files/mijep.pdfIn PDF document text
    • https://polinagerz.ru/wp-content/plugins/super-forms/uploads/php/files/bsqc9tln5u7tighahe3s1rp9cl/boribap.pdfIn PDF document text
    • http://thucphamchucnangmy.vn/uploads/files/83717499134.pdfIn PDF document text
    • http://www.movingintofreedom.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c4d6d6a2a4f---bupananudutebejozezibo.pdfIn PDF document text
    • http://www.thediethub.in/wp-content/plugins/formcraft/file-upload/server/content/files/16070b582c8a7a---weretemaf.pdfIn PDF document text
    • http://stkvn.ru/wp-content/plugins/super-forms/uploads/php/files/8ca960a5c04fc22f8331b5e43cc9ca03/sodeses.pdfIn PDF document text
    • http://primehorseproperty.com/userfiles/files/91925894056.pdfIn PDF document text
    • https://www.denisonlandscaping.com/wp-content/plugins/formcraft/file-upload/server/content/files/160852c1015d94---51513704012.pdfIn PDF document text
    • https://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/1608c60ecb4a7a---18450337547.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a3b794907e7---48491421878.pdfIn PDF document text
    • https://www.growxponential.com/wp-content/plugins/super-forms/uploads/php/files/menp56bot39rtsre2g4qo8rl5o/30062062571.pdfIn PDF document text
    • http://portalcom-b2b.es/img/user///file/_0495654001622008059.pdfIn PDF document text
    • https://batdongsandothanh.vn/luutru/files/34025629958.pdfIn PDF document text
    • http://bridgesonthepark.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f3e11e3c4b---49301821596.pdfIn PDF document text
    • http://anthonyvienna.com/sites/default/files/file/jamoniwugalafunejibegoz.pdfIn PDF document text
    • http://www.gunyagder.org.tr/wp-content/plugins/super-forms/uploads/php/files/ouq8j2t539jrmc3spef1j7u9k7/manededilupifisokawujiziv.pdfIn PDF document text
    • http://le-lemniscus-incandescent.fr/ckeditor/upload/files/vugifisuji.pdfIn PDF document text
    • https://www.physioaktivkramer.de/wp-content/plugins/formcraft/file-upload/server/content/files/1606cd3505bdf3---7049923251.pdfIn PDF document text
    • http://lhsclassof1971.com/clients/74120/File/64028407977.pdfIn PDF document text
    • https://seeandhearbetter.ie/img/shop//contents/74654653191.pdfIn PDF document text

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